Free Game Development Libraries

我就是我 2022-08-06 09:13 7阅读 0赞

[http://www.codemonsters.de/home/content.php?show=freelibraries\#2][http_www.codemonsters.de_home_content.php_show_freelibraries_2]

The following list is a collection of open source libraries, SDKs, frameworks, engines, tools, and utilities which might come in handy for your (game development) projects. With one exception, the *Golden T Game Engine*, which has been developed in Java, all of the listed libraries are written in C/C++.  
   
Special thanks go out to [Ben Sizer][] a.k.a. Kylotan from [Gamedev.net's community forum][Gamedev.net_s community forum].

Content:

*  [2D Graphics][]
 *  [3D Graphics Engines][]
 *  [3D Game Engines][]
 *  [Artificial Intelligence][]
 *  [Audio (Sound & Music)][Audio _Sound _ Music]
 *  [Collision Detection][]
 *  [Compression][]
 *  [Encryption][]
 *  [Font Handling][]
 *  [General Purpose][]
 *  [Graphical User Interfaces][]
 *  [Image Handling][]
 *  [Mathematics][]
 *  [Mesh Optimization and Preprocessing][]
 *  [Model Handling & 3D Character Animation][Model Handling _ 3D Character Animation]
 *  [Multimedia/Game Libraries][Multimedia_Game Libraries]
 *  [Networking][]
 *  [Physics][]
 *  [OpenGL][]
 *  [OpenGL Extension Handling][]
 *  [Scripting Languages][]
 *  [SDL - Simple DirectMedia Layer][]
 *  [Visualization][]
 *  [Widget Toolkits][]
 *  [XML][]
 *  [Unsorted][]

Latest updates:

*  July 17, 2008: Added [Arauna][], a real-time ray tracer, by Jacco Bikker
 *  July 13, 2008: Added [Phya][] by Zenprobe
 *  July 6, 2008: Added [Drome Engine][] by Josh Beam
 *  July 1, 2008: Added [dclib][], [Detours][], [Geometry Utility Library][], [Havok][], [libQGLViewer][], [libRocket][], [Pantheios][], [POCO C++ Libraries][POCO C_ Libraries], [Tiny Template Library][], [Visualization Library][], as well as [FLTK][], [FOX Toolkit][], [Qt Cross-Platform Application Framework][], and [wxWidgets][]
 *  April 29, 2008: Added [ACTC][] by Brad Grantham and [The Mesh SDK][] by Mike Chow
 *  April 20, 2008: Added [AES][] by Chris Lomont, [Box2D][] by Erin Catto, [Glyph Keeper][] by Kirill Kryukov, [GNE][] by Jason Winnebeck, and [PMASK][]
 *  March 27, 2008: Added [CML (Configurable Math Library)][CML _Configurable Math Library] by Jesse Anders
 *  March 22, 2008: Added [FreeSG][] by Hypertriton, Inc., [Cyclone Physics Simulator][] by Ian Millington, [Right Brain Games GUI][] and [Mocha][Right Brain Games GUI] by Right Brain Games as well as the [Wild Magic Graphics Engine][] by David Eberly
 *  February 29, 2008: Added [Dirent][] by Kevlin Henney and [glpng][] by Ben Wyatt
 *  February 26, 2008: Added [LodePNG][] by Lode Vandevenne
 *  February 6, 2008: Added [XMLParser][] by Frank Vanden Berghen
 *  January 8, 2008: Added [stbi][] by Sean Barrett

2D Graphics

[**CDX Library**][CDX Library]  
www.cdxlib.com  
**Description:** CDX is a free Game Development Kit which is comprised of a set of C++ wrapper classes for writing Windows games. It is built on top of Microsoft Windows and DirectX technology and offers simple to use C++ wrappers for all aspects of game development. This includes things like sprites, tiles, scollable maps, alpha blending and even 3D primitives (using Direct3D). CDX takes care of the low-level details of using DirectX, providing you with an easy to use toolkit for implementing your own games using simple yet flexible C++ classes. With only a handful of classes, CDX is quick to learn and easy to use.  
**Added:** October 31, 2004

[**Eclipse 2D Game Engine**][Eclipse 2D Game Engine]  
eclipseeng.sourceforge.net  
**Author:** JGH  
**License:** [LGPL][]  
**Added:** October 31, 2004

[**Golden T Game Engine**][Golden T Game Engine]  
goldenstudios.or.id/products/GTGE/  
**Description:** Golden T Game Engine (GTGE) is an advanced cross-platform game programming library written in **Java** language. GTGE library provides a complete routines for making 2D game, from low level routines such as hardware accelerated 2D graphics, mouse and keyboard input, audio, timing, to game specific routines such as sprite, background, collision detection.  
**Author:** Paulus Tuerah  
**License:** free, but requires credits  
**Added:** March 28, 2005

[**hxRender**][hxRender]  
mavweb.mnsu.edu/longaj/hxrender/  
**Author:** Joel Longanecker  
**License:** [zlib][]  
**Platforms:** Windows, GNU/Linux, MacOS X  
**Added:** October 31, 2004

[**Haaf's Game Engine - Hardware accelerated 2D game engine**][Haaf_s Game Engine - Hardware accelerated 2D game engine]  
hge.relishgames.com  
**License:** [Free for non-commercial use][]  
**Platforms:** Windows  
**Added:** October 31, 2004

3D Graphics Engines

[**Arauna - Real-Time Ray Tracing**][Arauna]  
igad.nhtv.nl/~bikker/  
**Description:** Arauna is a real-time ray tracer developed for game development.  
**Author:** Jacco Bikker  
**License:** Free for non-commerical use  
**Added:** July 17, 2008

[**Crystal Space 3D**][Crystal Space 3D]  
www.crystalspace3d.org  
**Description:** Crystal Space is a free and portable 3D Game Development Kit written in C++.  
**License:** [LGPL][]  
**Platforms:** GNU/Linux, Unix, Windows, MacOS X  
**Added:** October 31, 2004

[**Delta3D**][Delta3D]  
delta3d.org  
**Description:** A well-supported and fully-funded open source project, Delta3D is a full-function game engine appropriate for a wide variety of modeling & simulation applications.  
**License:** [LGPL][]  
**Added:** March 28, 2005

[**Demeter Terrain Engine**][Demeter Terrain Engine]  
demeter.sourceforge.net  
**Description:** Demeter is a cross-platform C++ library that renders 3D terrains using OpenGL. Demeter is designed for fast performance and good visual quality and makes use of advanced techniques such as dynamic tessellation (adaptive mesh) to render vast landscapes in real-time, without the need for high-end hardware. It is written as a stand-alone component that can be easily integrated into any kind of application.  
**Author:** Clay Fowler  
**License:** [LGPL][]  
**Added:** October 31, 2004

[**ExNihilo**][ExNihilo]  
www.ploksoftware.org  
**Description:** ExNihilo engine is new technology based on multi manager system.  
**Added:** October 31, 2004

[**FreeSG**][FreeSG]  
www.freesg.org  
**Description:** FreeSG is a portable, high-level open-source 3D engine with an emphasis on generality.  
**Authors:** Hypertriton, Inc.  
**License:** BSD  
**Added:** March 22, 2008

[**G3D C++ Library**][G3D C_ Library]  
g3d-cpp.sourceforge.net  
**Description:** G3D is a commercial-grade 3D Engine available as Open Source. It is used in games, tech demos, research papers, military simulators, and university courses. It can support real-time rendering, off-line rendering, back-end game server management of 3D worlds, and use of graphics hardware for general purpose computing.  
**Authors:** Morgan McGuire, Peter Sibley, Ben Landon, Peter Hunt, Giulio Mainardi, Gabe Taubman  
**License:** [BSD][]  
**Platforms:** Windows, GNU/Linux, MacOS X  
**Added:** October 31, 2004

[**Genesis3D Engine**][Genesis3D Engine]  
www.genesis3d.com  
**Description:** Genesis3D is a real-time 3D rendering environment for all of your real-time 3D needs.  
**Added:** October 31, 2004

[**Horde3D - Next-Generation Graphics Engine**][Horde3D - Next-Generation Graphics Engine]  
www.nextgen-engine.net  
**Description:** Horde3D is a small open source 3D rendering engine. It is written in an effort to create a graphics engine that offers the stunning visual effects expected in next-generation games while at the same time being as lightweight and conceptually clean as possible. Horde3D has a simple and intuitive interface accessible from virtually any programming language and is particularly suitable for rendering large crowds of animated characters in next-generation quality.  
**Author:** Nicolas Schulz  
**License:** [LGPL][]  
**Added:** October 6, 2007

[**Irrlicht Engine**][Irrlicht Engine]  
irrlicht.sourceforge.net  
**Description:** The Irrlicht Engine is an open source high performance realtime 3D engine written and usable in C++ and also available for .NET languages. It is completely cross-platform, using D3D, OpenGL and its own software renderer, and has all of the state-of-the-art features which can be found in commercial 3d engines.  
**Author:** Nikolaus Gebhardt  
**License:** [zlib][]  
**Platforms:** Windows, GNU/Linux  
**Added:** October 31, 2004

[**Jet3D**][Jet3D]  
www.jet3d.com  
**Added:** October 31, 2004

[**Lightfeather**][Lightfeather]  
lf.mmdevel.de/news.php  
**Description:** Lightfeather (formerly Irrlicht NX++) is an open source 3D Engine for MacOSX, Windows and Linux.  
**License:** [zlib/libpng][zlib_libpng]  
**Platforms:** Windows, GNU/Linux, MacOS X  
**Added:** October 31, 2004

[**Nebula Device 2**][Nebula Device 2]  
nebuladevice.cubik.org  
**Description:** Nebula Device is an open source realtime 3D game/visualization engine, written in C++. Version 2 is a modern rendering engine making full use of shaders.  
**Platforms:** Windows, GNU/Linux, MacOS X  
**Added:** October 31, 2004

[**NVSG SDK**][NVSG SDK]  
developer.nvidia.com/object/nvsg\_home.html  
**Description:** The nVIDIA Scene Graph Software Development Kit is an object-oriented programming library for creating scene graph-based applications.  
**Author:** nVIDIA  
**Added:** October 31, 2004

[**Ogre3D**][Ogre3D]  
www.ogre3d.org  
**Description:** Ogre (Object-oriented Graphics Rendering Engine) is an open-source graphics rendering engine.  
**License:** [LGPL][]  
**Added:** October 31, 2004

[**OpenSceneGraph**][OpenSceneGraph]  
www.openscenegraph.org  
**Description:** The OpenSceneGraph is an open source high peformance 3D graphics toolkit, used by application developers in fields such as visual simulation, games, virtual reality, scientific visualization and modelling.  
**License:** [OpenSceneGraph Public License (based on the LGPL)][OpenSceneGraph Public License _based on the LGPL]  
**Platforms:** Windows, MacOS X, GNU/Linux, IRIX, Solaris, FreeBSD  
**Added:** October 31, 2004

[**SGL - A 3D Scene Graph Library**][SGL - A 3D Scene Graph Library]  
sgl.sourceforge.net  
**Description:** SGL consists of a set of cross-platform C++ libraries, built on top of OpenGL, which implements 3D scene graph functionality, some simple 3D model loaders, and some miscellaneous utilities.  
**Added:** October 31, 2004

[**SxDL Game Development Toolkit**][SxDL Game Development Toolkit]  
sxdl.sourceforge.net  
**Description:** SxDL is a powerful and an easy to use 2D and 3D Game Development Framework for MS Windows and MS DirectX.  
**License:** [GPL][]  
**Added:** October 31, 2004

[**Wild Magic Real-Time 3D Graphics Engine**][Wild Magic Graphics Engine]  
www.geometrictools.com  
**Author:** David Eberly  
**License:** LGPL  
**Added:** March 22, 2008

[**XEngine**][XEngine]  
xengine.sourceforge.net  
**Description:** XEngine is a platform- and rendering-API-independent 3D engine for real-time visualization with support for programmable graphics pipeline architectures and is implemented in C++. The engine aims at flexible support for many of the shading languages available today, so that existing shaders can easily be re-used. This includes current assembler-like languages as well as high-level languages, such as NVIDIA's Cg. In addition, integration of new shading languages should be easily possible with the engine's design.  
**Author:** Martin Ecker  
**License:** [zlib][]  
**Added:** October 31, 2004

[**Yake**][Yake]  
www.yake.org  
**Description:** Yake is a small, flexible, cross-platform game engine/application framework.  
**License:** [LGPL][]  
**Added:** March 28, 2005

3D Game Engines

[**Apocalyx**][Apocalyx]  
apocalyx.sourceforge.net  
**Description:** Apocalyx is an OpenGL 3D engine. The current implementation supports Win98 (or higher) and accelerated 3D graphic cards with OpenGL drivers.  
**License:** [GPL][]  
**Platforms:** Windows  
**Added:** October 31, 2004

[**Cube Engine**][Cube Engine]  
www.cubeengine.com  
**Description:** Cube is an open source multiplayer and singleplayer first person shooter game built on an entirely new and very unconventional engine. Cube is a landscape-style engine that pretends to be an indoor FPS engine, which combines very high precision dynamic occlusion culling with a form of geometric mipmapping on the whole world for dynamic LOD for configurable fps & graphic detail on most machines. Uses OpenGL & SDL.  
**Author:** Wouter van Oortmerssen  
**License:** [zlib][]  
**Added:** October 31, 2004

[**Drome Engine**][Drome Engine]  
www.3ddrome.com/engine.php  
**Author:** Josh Beam  
**Added:** July 6, 2008

[**Fly3D**][Fly3D]  
www.fly3d.com.br  
**Description:** Fly3D is a plugin-oriented, OpenGL-based 3D games engine and development kit. It offers rendering, input, sound and scene control methods for game programmers to build their game software, as well as a variety of tools for game developers to add and modify content to game projects.  
**Authors:** Alan Watt, Fabio Policarpo  
**License:** [GPL][]  
**Added:** October 31, 2004

[**NeoEngine**][NeoEngine]  
www.neoengine.org  
**Description:** NeoEngine is an Open Source 3D game engine  
**License:** [MPL][]  
**Added:** October 31, 2004

[**Panda3D**][Panda3D]  
panda3d.etc.cmu.edu  
**Description:** The free open source game and simulation engine, developed by Disney and maintained by Carnegie Mellon University's Entertainment Technology Center.  
**License:** [Free][]  
**Added:** March 28, 2005

[**QuakeForge**][QuakeForge]  
www.quakeforge.net  
**Description:** QuakeForge is a 3D graphics game engine based on id Software's legendary Quake and QuakeWorld game engine.  
**License:** [GPL][]  
**Added:** October 31, 2004

[**Tenebrae**][Tenebrae]  
tenebrae.sourceforge.net  
**Description:** Tenebrae is a modification of the quake source that adds stencil shadows and per pixel lights to quake.  
**Added:** October 31, 2004

Artificial Intelligence

[**FEAR - Foundations for Genuine Game AI**][FEAR - Foundations for Genuine Game AI]  
fear.sourceforge.net  
**License:** [GPL][]  
**Added:** September 13, 2007

[**MicroPather**][MicroPather]  
www.grinninglizard.com/MicroPather/  
**Description:** Pathing Made Simple. MicroPather is a path finder and A\* solver (astar or a-star) written in platform independent C++ that can be easily integrated into existing code. MicroPather focuses on being a path finding engine for video games but is a generic A\* solver.  
**Author:** Lee Thomason  
**License:** [zlib][]  
**Added:** September 13, 2007

[**OpenSteer**][OpenSteer]  
opensteer.sourceforge.net  
**Description:** OpenSteer is a C++ library to help build steering behaviors for autonomous characters in games and animation. OpenSteer provides an app which displays predefined demos of steering behaviors. You can prototype, visualize and debug your own as a plug-in.  
**Author:** Craig Reynolds  
**License:** [MIT][]  
**Platforms:** Windows, All POSIX (Linux/BSD/UNIX-like OSes), Linux, MacOS X  
**Added:** October 31, 2004

[**PathLib - Game Pathfinding Library**][PathLib - Game Pathfinding Library]  
pathlib.hildebrand.cz/pathlib.html  
**Description:** The Pathlib is an independent simple library (written in C) for searching optimal paths for objects in map. The library solves generally tasks like finding optimal-cost path in map, timing objects and their movement in map, simple collision detection and solving of deadlocks.  
**License:** unknown  
**Added:** September 13, 2007

Audio (Sound & Music)

[**Audiere**][Audiere]  
audiere.sourceforge.net  
**Description:** Audiere is a high-level audio API. It can play Ogg Vorbis, MP3, FLAC, uncompressed WAV, AIFF, MOD, S3M, XM, and IT files. For audio output, Audiere supports DirectSound or WinMM in Windows, OSS on Linux and Cygwin, and SGI AL on IRIX.  
**Author:** Chad Austin  
**License:** [LGPL][]  
**Platforms:** Windows, Linux-i386, Cygwin, IRIX  
**Added:** October 31, 2004

[**BASS Audio Library**][BASS Audio Library]  
www.un4seen.com  
**Description:** BASS is an audio library for use in Windows and Mac OSX software. Its purpose is to provide developers with the most powerful and efficient (yet easy to use), sample, stream (MP3, MP2, MP1, OGG, WAV, AIFF, custom generated, and more via add-ons), MOD music (XM, IT, S3M, MOD, MTM, UMX), MO3 music (MP3/OGG compressed MODs), and recording functions. All in a tiny DLL, under 100KB\* in size.  
**Author:** un4seen development  
**License:** [Free for non-commercial use][Free for non-commercial use 1]  
**Platforms:** Windows, MacOS X  
**Added:** October 31, 2004

[**FMOD Sound System**][FMOD Sound System]  
www.fmod.org  
**Description:** FMOD is a cross platform audio library to let you easily implement the latest audio technologies into your title.  
**Authors:** Firelight Technologies Pty, Ltd  
**License:** [Free for non-commercial use][Free for non-commercial use 2]  
**Platforms:** Windows, Linux, MacOS X, PS2, Xbox, GC...  
**Added:** October 31, 2004

[**FreeSL - Free Sound Library**][FreeSL - Free Sound Library]  
www.lukasheise.com/web\_res/freesl.html  
**Description:** FreeSL (Free Sound Library) is a OpenAL wrapper. It also includes the EAX 2.0 library for realistic audio environment simulations plus occlusion and obstruction.  
**Author:** Lukas Heise  
**License:** Free  
**Added:** October 6, 2007

[**Hekkus Sound System**][Hekkus Sound System]  
www.shlzero.com  
**Description:** Hekkus Sound System is a small and fast sound engine for WinCE/Win32/Symbian and .NET application, expecially designed for games.  
**Author:** Thomas Maniero  
**License:** Donate-Ware  
**Platforms:** Win32, WinCE, Symbian  
**Added:** October 31, 2004

[**irrKlang**][irrKlang]  
www.ambiera.com/irrklang/index.html  
**Description:** irrKlang is a cross platform audio library designed to be used in games, scientific simulations and similar.  
**Author:** Nikolaus Gebhardt  
**License:** [irrKlang License][]  
**Added:** September 17, 2007

[**Libsndfile**][Libsndfile]  
www.mega-nerd.com/libsndfile/  
**Description:** Libsndfile is a C library for reading and writing files containing sampled sound (such as MS Windows WAV and the Apple/SGI AIFF format) through one standard library interface.  
**Author:** Erik de Castro Lopo  
**License:** [LGPL][]  
**Platforms:** Windows, Linux, MacOS X, Solaris, QNX  
**Added:** October 31, 2004

[**libMikMod**][libMikMod]  
mikmod.raphnet.net  
**Description:** Mikmod is a module player and library supporting many formats, including mod, s3m, it, and xm.  
**Author:** Raphaël Assénat  
**License:** [LGPL][]  
**Added:** September 17, 2007

[**Ogg Vorbis**][Ogg Vorbis]  
www.vorbis.com  
**Description:** Ogg Vorbis is a completely open, patent-free, professional audio encoding and streaming technology with all the benefits of Open Source.  
**License:** [BSD-like][]  
**Added:** September 17, 2007

[**OpenAL**][OpenAL]  
www.openal.org  
**Description:** OpenAL is a cross-platform 3D audio API appropriate for use with gaming applications and many other types of audio applications.  
**Platforms:** Windows, Linux, MacOS X, UNIX, Xbox  
**Added:** October 31, 2004

[**Open Source Audio Library Project**][Open Source Audio Library Project]  
osalp.sourceforge.net  
**Authors:** Bruce Forsberg, Darrick Servis  
**License:** [LGPL][]  
**Platforms:** Linux, Solaris, FreeBSD  
**Added:** October 31, 2004

[**Phya - Physical Audio for Virtual Worlds**][Phya]  
www.zenprobe.com/phya/  
**Description:** Phya is a C++ library, that was created as an expandable system for adding physical audio to a virtual world.  
**License:** [zlib][]  
**Added:** July 13, 2008

[**PortAudio**][PortAudio]  
www.portaudio.com  
**Description:** PortAudio is a free, cross platform, open-source, audio I/O library.  
**Authors:** Ross Bencina, Phil Burk  
**License:** [Free][Free 1]  
**Platforms:** Windows, MacOS X, Unix, SGI, BeOS  
**Added:** October 31, 2004

[**SDL\_mixer**][SDL_mixer]  
www.libsdl.org/projects/SDL\_mixer/  
**Description:** A sample multi-channel audio mixer library.  
**Authors:** Sam Lantinga, Stephane Peter, Ryan Gordon  
**License:** [LGPL][]  
**Platforms:** Windows, MacOS X, Linux  
**Added:** October 31, 2004

[**SDL\_sound**][SDL_sound]  
icculus.org/SDL\_sound/  
**Description:** SDL\_sound is a library that handles the decoding of several popular sound file formats, such as .WAV and .MP3.  
**Author:** Ryan C. Gordon  
**License:** [LGPL][]  
**Platforms:** Windows, Linux, MacOS X, FreeBSD, BeOS  
**Added:** October 31, 2004

Collision Detection

[**Bitmask**][Bitmask]  
people.ifm.liu.se/ulfek/bitmask/  
**Description:** The Bitmask library provides C functions for 2D pixel-perfect collision detection. In addition to just collision detection the library can also calculate a point of intersection and the number of overlapping pixels in an efficient way.  
**Author:** Ulf Ekström  
**License:** [LGPL][]  
**Added:** September 13, 2007

[**ColDet - Free 3D Collision Detection Library**][ColDet - Free 3D Collision Detection Library]  
photoneffect.com/coldet/  
**Description:** This library is an effort to provide a free collision detection library for generic polyhedra. Its purpose is mainly for 3D games where accurate detection is needed between two non-simple objects.  
**Author:** Amir Geva  
**License:** [LGPL][]  
**Platforms:** Windows, Linux  
**Added:** October 31, 2004

[**FreeSOLID - Software Library for Interference Detection**][FreeSOLID - Software Library for Interference Detection]  
www.win.tue.nl/~gino/solid/index.html  
**Description:** SOLID is a library for collision detection of three-dimensional objects undergoing rigid motion and deformation. SOLID is designed to be used in interactive 3D graphics applications, and is especially suited for collision detection of objects and worlds described in VRML.  
**Author:** Gino van den Bergen  
**License:** [LGPL][]  
**Added:** October 31, 2004

[**GImpact**][GImpact]  
gimpact.sourceforge.net  
**Description:** GImpact is a software library with tools for geometry processing and collision detection, focused on solving most common problems on Virtual Reality development.  
**Author:** Francisco Leon  
**License:** [LGPL][]  
**Added:** September 14, 2007

[**PMASK**][PMASK]  
sourceforge.net/projects/pmask/  
**Description:** Optimized "pixel perfect" collision detection intended for use in 2-D games. This is intended for use with either Allegro or SDL (game-oriented IO libraries), but does not require either.  
**License:** Public Domain  
**Added:** April 20, 2008

[**OPCODE - Optimized Collision Detection**][OPCODE - Optimized Collision Detection]  
www.codercorner.com/Opcode.htm  
**Description:** OPCODE is a new small collision detection library. It is similar to popular packages such as SOLID or RAPID, but more memory-friendly, and often faster.  
**Author:** Pierre Terdiman  
**License:** Free  
**Platforms:** Windows, Linux  
**Added:** October 31, 2004

[**RAPID - Robust and Accurate Polygon Interference Detection**][RAPID - Robust and Accurate Polygon Interference Detection]  
www.cs.unc.edu/~geom/OBB/OBBT.html  
**Description:** RAPID is a robust and accurate polygon interference detection library for large environments composed of unstructured models.  
**License:** Free for non-commercial use  
**Added:** October 31, 2004

[**V-Collide - Collision Detection for Arbitrary Polygonal Objects**][V-Collide - Collision Detection for Arbitrary Polygonal Objects]  
www.cs.unc.edu/%7Egeom/V\_COLLIDE/  
**Description:** V-Collide is a collision detection library for large environments. It is designed to operate on large numbers of polygonal objects. It makes no assumptions about input structure and works on arbitrary models, also known as "polygon soups".  
**Added:** September 14, 2007

Compression

[**bzip2**][bzip2]  
www.bzip.org  
**Description:** bzip2 is a freely available, patent free (see below), high-quality data compressor. It typically compresses files to within 10% to 15% of the best available techniques (the PPM family of statistical compressors), whilst being around twice as fast at compression and six times faster at decompression.  
**Author:** jseward  
**License:** [BSD][]  
**Platforms:** Windows, UNIX, OS/2, Amiga  
**Added:** October 31, 2004

[**LZMA SDK**][LZMA SDK]  
www.7-zip.org/sdk.html  
**Description:** LZMA is the default and general compression method of 7z format in the 7-Zip program. LZMA provides a high compression ratio and very fast decompression, so it is very suitable for embedded applications.  
**Author:** Igor Pavlov  
**License:** [LGPL][]  
**Added:** September 17, 2007

[**LZO**][LZO]  
www.oberhumer.com/opensource/lzo/  
**Description:** LZO is a portable lossless data compression library written in ANSI C.  
**Author:** Markus F.X.J. Oberhumer  
**License:** [GPL][GPL 1]  
**Added:** September 17, 2007

[**Minizip: Zip and UnZip additionnal library**][Minizip_ Zip and UnZip additionnal library]  
www.winimage.com/zLibDll/minizip.html  
**Description:** The Zlib library allows to deflate compressed files and to create gzip (.gz) files.  
**Authors:** Gilles Vollant, Eric Bischoff  
**License:** Free  
**Added:** October 31, 2004

[**szip**][szip]  
www.compressconsult.com/szip/  
**Description:** Szip is a freeware portable general purpose lossless compression program. It has a high speed and compression, but high memory demands (up to 20MB) too.  
**Author:** Michael Schindler  
**Platforms:** Windows, Linux, Unix, BeOS, MacOS X, OS/2  
**Added:** October 31, 2004

[**unrarlib - Unique RAR File Library**][unrarlib - Unique RAR File Library]  
www.unrarlib.org  
**Description:** The UniquE RAR File Library is a platform-independent, small and fast static library for decompressing RAR files (RAR archives are created with WinRAR). Full RAR v2.0 file format support of all compression methods, including multimedia compression and encoding is available.  
**Authors:** Christian Scheurer, Johannes Winkelmann  
**License:** [GPL][]  
**Platforms:** Windows, Linux, SunOS, WinCE, OS/2  
**Added:** October 31, 2004

[**ZipArchive**][ZipArchive]  
www.artpol-software.com/ZipArchive/  
**License:** [Licensing information][]  
**Added:** September 17, 2007

[**ZipStream/Bzip2Stream**][ZipStream_Bzip2Stream]  
www.codeproject.com/vcpp/stl/zipstream.asp  
**Description:** Two zipped STL iostream implementations based on the library zlib and bzip2. This means that you can easily manipulate zipped streams like any other STL ostream/istream.  
**Author:** Jonathan de Halleux  
**License:** [LGPL][]  
**Platforms:** Windows  
**Added:** October 31, 2004

[**Zlib - A Massively Spiffy Yet Delicately Unobtrusive Compression Library**][Zlib - A Massively Spiffy Yet Delicately Unobtrusive Compression Library]  
www.zlib.net  
**Authors:** Jean-loup Gailly, Mark Adler  
**License:** [zlib][]  
**Platforms:** Windows, Linux, Unix, MacOS X, and any other platform :)  
**Added:** October 31, 2004

[**zziplib**][zziplib]  
zziplib.sourceforge.net  
**Description:** The zziplib library is intentionally lightweight, it offers the ability to easily extract data from files archived in a single zip file. Applications can bundle files into a single zip archive and access them. The implementation is based only on the (free) subset of compression with the zlib algorithm which is actually used by the zip/unzip tools.  
**Author:** Guido Draheim  
**License:** [LGPL/MPL][LGPL_MPL]  
**Platforms:** Windows, Linux, Solaris, FreeBSD, MacOS X  
**Added:** October 31, 2004

Encryption

[**AES**][AES]  
www.lomont.org/Software/Misc/AES/AES.php  
**Description:** AES - Advanced Encryption Standard  
**Author:** Chris Lomont  
**License:** free  
**Added:** April 20, 2008

[**Crypto++ Library**][Crypto_ Library]  
www.eskimo.com/~weidai/cryptlib.html  
**Description:** A free C++ class library of cryptographic schemes. Currently the library consists of the following, some of which are other people's code, repackaged into classes.  
**Author:** Wei Dai  
**License:** [Public Domain][]  
**Platforms:** Windows, UNIX, MacOS X, BeOS, Solaris  
**Added:** October 31, 2004

[**Cryptlib**][Cryptlib]  
www.cs.auckland.ac.nz/~pgut001/cryptlib/  
**Description:** cryptlib is a powerful security toolkit that allows even inexperienced crypto programmers to easily add encryption and authentication services to their software.  
**License:** [Distributed under a dual license (free, open-source as a GPL-like license and closed-source use under a standard commercial license)][Distributed under a dual license _free_ open-source as a GPL-like license and closed-source use under a standard commercial license]  
**Platforms:** Windows, Linux, UNIX, MacOS X, BeOS  
**Added:** October 31, 2004

[**LockBox**][LockBox]  
sourceforge.net/projects/tplockbox/  
**Description:** LockBox is a cross-platform toolkit for data encryption. It contains routines & components for use with Borland Delphi, C++Builder, & Kylix. It provides support for Blowfish, RSA, MD5, SHA-1, DES, triple- DES, Rijndael, & digital signing of messages.  
**License:** [LGPL][]  
**Platforms:** Windows, Linux, UNIX  
**Added:** October 31, 2004

Font Handling

[**FTGL**][FTGL]  
homepages.paradise.net.nz/henryj/code/index.html  
**Description:** A font rendering library for OpenGL.  
**Author:** Henry Maddock  
**License:** [LGPL][]  
**Added:** September 14, 2007

[**FreeType**][FreeType]  
www.freetype.org  
**Description:** FreeType 2 is a software font engine that is designed to be small, efficient, highly customizable and portable while capable of producing high-quality output (glyph images). It can be used in graphics libraries, display servers, font conversion tools, text image generation tools, and many other products as well.  
**License:** [FreeType License/GPL][FreeType License_GPL]  
**Platforms:** Cross-platform  
**Added:** January 8, 2006

[**GLFT\_Font**][GLFT_Font]  
www.cs.rit.edu/%7Ejpt2433/glftfont/  
**Description:** GLFT\_Font allows programmers to use fonts in their OpenGL applications with great ease on any platform for which both FreeType2 and OpenGL are available.  
**Authors:** James Turk, Marijn Haverbeke  
**License:** [zlib][]  
**Added:** September 14, 2007

[**Glyph Keeper**][Glyph Keeper]  
kd.lab.nig.ac.jp/glyph-keeper/  
**Description:** Glyph Keeper is a C language library for text rendering. Glyph Keeper helps your program to load a font, render character glyphs and write them to the target surface. Right now only Allegro and SDL targets are supported, but there will be more in future. Glyph Keeper is free, portable, effecient and easy to use.  
**Author:** Kirill Kryukov  
**License:** [free][]  
**Added:** April 20, 2008

[**SFont**][SFont]  
www.linux-games.com/sfont/  
**License:** GPL'ed  
**Added:** September 14, 2007

General Purpose

[**boost - C++ libraries**][boost - C_ libraries]  
www.boost.org  
**License:** [Boost license][]  
**Added:** September 14, 2007

[**Ceylan**][Ceylan]  
ceylan.sourceforge.net  
**Description:** Ceylan is a C++ open-source library which provides basic core functionalities and a set of optional features.  
**License:** [LGPL][]  
**Added:** October 16, 2007

[**Chattering Pixels**][Chattering Pixels]  
www.chatteringpixels.com/products.php  
**Description:** Memory Manager, File I/O, Sorting, Timer...  
**Added:** September 17, 2007

[**dclib**][dclib]  
dclib.sourceforge.net  
**License:** [Boost Software License][]  
**Added:** July 1, 2008

[**Detours**][Detours]  
research.microsoft.com/sn/detours/  
**Description:** Detours is a library for instrumenting arbitrary Win32 functions on x86, x64, and IA64 machines. Detours intercepts Win32 functions by re-writing the in-memory code for target functions. The Detours package also contains utilities to attach arbitrary DLLs and data segments (called payloads) to any Win32 binary.  
**Added:** July 1, 2008

[**dirent - POSIX Directory Browsing API for Win32**][Dirent]  
www.two-sdg.demon.co.uk/curbralan/code/dirent/dirent.html  
**Description:** The functions and types specified in POSIX for iterating over directory entries have been defined here as wrappers for porting to and common use on Win32 platforms.  
**Author:** Kevlin Henney  
**Added:** February 29, 2008

[**File Logging Class**][File Logging Class]  
www.paulnettle.com  
**Description:** This small class adds feature-rich file logging capabilities to any project. Logging hierarchy is maintained, so that recursion is represented in the log with identation, making it easy to follow code flow.  
**Author:** Paul Nettle  
**License:** Free  
**Added:** September 17, 2007

[**Garbage Collector**][Garbage Collector]  
www.hpl.hp.com/personal/Hans\_Boehm/gc/  
**Description:** The Boehm-Demers-Weiser conservative garbage collector can be used as a garbage collecting replacement for C malloc or C++ new. It allows you to allocate memory basically as you normally would, without explicitly deallocating memory that is no longer useful. The collector automatically recycles memory when it determines that it can no longer be otherwise accessed.  
**Author:** Hans Boehm  
**License:** Free  
**Added:** September 17, 2007

[**Google-Sparsehash**][Google-Sparsehash]  
sourceforge.net/projects/goog-sparsehash  
**Description:** An extremely memory-efficient hash\_map implementation. 2 bits/entry overhead! The SparseHash library contains several hash-map implementations, including implementations that optimize for space or speed.  
**License:** [BSD][]  
**Added:** October 8, 2007

[**Image Debugger**][Image Debugger]  
billbaxter.com/projects/imdebug/  
**Description:** A utility for simple printf-style debugging of images in Win32 C/C++ applications.  
**Author:** William Baxter  
**License:** Free  
**Added:** September 17, 2007

[**IProf**][IProf]  
silverspaceship.com/src/iprof/  
**Description:** A portable industrial-strength interactive profiler for C++ and C.  
**License:** Public domain  
**Added:** September 17, 2007

[**MMGR**][File Logging Class]  
www.paulnettle.com  
**Description:** MMGR is an industrial-strength memory manager for almost any project.  
**Author:** Paul Nettle  
**License:** Free  
**Added:** September 17, 2007

[**Mocha - A Small C++ Types Library**][Right Brain Games GUI]  
www.rightbraingames.com/tech.php  
**Description:** Mocha is a small library of useful types that can be used to simplify common tasks in C++. It contains classes for 3D math operations, input/output streams, high quality random number generation, sophisticated scripting with support for micro-threads (Using the Lua scripting language), hardware thread management and synchronization, and plenty more.  
**Author:** Right Brain Games  
**License:** LGPL  
**Added:** March 22, 2008

[**OIS - Object-Oriented Input System**][OIS - Object-Oriented Input System]  
www.wreckedgames.com/wiki/index.php/WreckedLibs:OIS  
**License:** [zlib][]  
**Added:** September 14, 2007

[**Pantheios**][Pantheios]  
pantheios.sourceforge.net  
**Description:** Pantheios is an Open Source C/C++ Logging API library, offering an optimal combination of 100% type-safety, efficiency, genericity and extensibility. It is simple to use and extend, highly-portable (platform and compiler-independent).  
**License:** BSD-style licence  
**Added:** July 1, 2008

[**PhysicsFS**][PhysicsFS]  
icculus.org/physfs/  
**Description:** PhysicsFS is a library to provide abstract access to various archives. It is intended for use in video games, and the design was somewhat inspired by Quake 3's file subsystem.  
**License:** [zlib][]  
**Added:** October 31, 2004

[**POCO C++ Libraries**][POCO C_ Libraries]  
pocoproject.org  
**Description:** POCO, the C++ Portable Components, is a collection of open source C++ class libraries that simplify and accelerate the development of network-centric, portable applications in C++.  
**License:** [POCO/Boost Software License][POCO_Boost Software License]  
**Added:** July 1, 2008

[**SDL\_Config**][SDL_Config]  
student.agh.edu.pl/%7Ekoshmaar/SDL\_Config/  
**Description:** Configuration file handling.  
**Author:** Hubert Rutkowski  
**License:** [LGPL][]  
**Added:** September 14, 2007

[**SQLite**][SQLite]  
www.sqlite.org  
**Description:** SQLite is a small C library that implements a self-contained, embeddable, zero-configuration SQL database engine.  
**License:** Public domain  
**Added:** September 17, 2007

[**Tiny Template Library**][Tiny Template Library]  
tinytl.sourceforge.net  
**Description:** The Tiny Template Library (TTL) is a C++ template library for generic programming. The main objective is to develop a lightweight practical alternative to some of the Boost components.  
**Added:** July 1, 2008

Graphical User Interfaces

[**CEGUI - Crazy Eddie's GUI System**][CEGUI - Crazy Eddie_s GUI System]  
www.cegui.org.uk/modules/news/  
**Description:** Crazy Eddie's GUI System is a free library providing windowing and widgets for graphics APIs / engines where such functionality is not natively available, or severely lacking. The library is object orientated, written in C++, and targeted at games developers who should be spending their time creating great games, not building GUI sub-systems!  
**License:** [LGPL][]  
**Platforms:** Windows, Linux  
**Added:** October 31, 2004

[**libRocket**][libRocket]  
www.librocket.com  
**Description:** libRocket is a C++ interface middleware package designed for game applications. At its core it is based on the popular HTML and CSS specifications. It contains a full set of widgets so you can get creating screens right out of the box.  
**Added:** July 1, 2008

[**LibUFO**][LibUFO]  
libufo.sourceforge.net  
**Description:** LibUFO is a C++ core library for forms respectively graphical user interfaces (GUI). It is mainly used as OpenGL GUI toolkit.  
**License:** [LGPL][]  
**Added:** September 17, 2007

[**ParaGUI**][ParaGUI]  
www.paragui.org  
**Description:** ParaGUI is a cross-platform high-level application framework and GUI (graphical user interface) library and is based on the Simple DirectMedia Layer (SDL). ParaGUI is targeted on crossplatform multimedia applications and embedded devices operating on framebuffer displays.  
**License:** [LGPL][]  
**Platforms:** Cross-platform  
**Added:** October 31, 2004

[**Right Brain Games GUI**][Right Brain Games GUI]  
www.rightbraingames.com/tech.php  
**Description:** The Right Brain Games GUI is a custom user interface library for 3D games. It supports hardware rendering of multiple user interface windows into separate texture buffers to improve performance and allow for complex animation effects.  
**Author:** Right Brain Games  
**License:** LGPL  
**Added:** March 22, 2008

[**SDL\_Console**][SDL_Console]  
sdlconsole.sourceforge.net  
**Description:** A drop down console that can be easily added to any SDL application. It is similar to Quake and other games consoles. A console gives you the ability to interact with your program in an easy way by executing predefined commands. You can also have more than one console at a time.  
**Authors:** Garret Banuk, Boris Lesner, Clemens Wacha  
**License:** [LGPL][]  
**Platforms:** All  
**Added:** October 31, 2004

Image Handling

[**AfterImage**][AfterImage]  
www.afterstep.org/afterimage/  
**Description:** A generic image manipulation library. It was initially implemented to address AfterStep Window Manager's needs for image handling, but it evolved into extremely powerfull and flexible software, suitable for virtually any project that has needs for loading, manipulating, displaying images, as well as writing images in files.  
**Author:** Sasha Vasko  
**Added:** October 31, 2004

[**CImg - C++ Template Image Processing Library**][CImg - C_ Template Image Processing Library]  
cimg.sourceforge.net  
**Description:** An open source C++ toolkit for image processing. It provides simple classes and functions to load, save, process and display images in your own C++ code.  
**Author:** David Tschumperle  
**License:** [CeCiLL License][]  
**Platforms:** Unix/X11, Windows, MacOS X, FreeBSD  
**Added:** October 31, 2004

[**Corona**][Corona]  
corona.sourceforge.net  
**Description:** Corona is an image input/output library that can read, write, and manipulate image files in just a few lines of code. It can write PNG and TGA files, and read PNG, JPEG, PCX, BMP, TGA, and GIF. Corona was designed to be easy to use, and exports a straightforward C++ API. With just a few lines of C++, you can add image loading to your application.  
**Author:** Chad Austin  
**License:** [zlib][]  
**Platforms:** Windows, Linux, IRIX  
**Added:** October 31, 2004

[**CxImage**][CxImage]  
www.xdp.it/cximage.htm  
**Description:** A C++ class that can load, save, display, transform images in a very simple and fast way. With more than 200 functions, and with comprehensive working demos, CxImage offers all the tools to build simple image processing applications on a fast learning curve. Supported file formats are: BMP, GIF, ICO, CUR, JBG, JPG, JPC, JP2, PCX, PGX, PNG, PNM, RAS, TGA, TIF, WBMP, WMF.  
**Author:** Davide Pizzolato  
**License:** [zlib][]  
**Platforms:** Windows, Linux  
**Added:** January 8, 2006

[**DevIL**][DevIL]  
openil.sourceforge.net  
**Description:** A fully featured cross-platform image library.  
**Authors:** Denton Woods, Nicolas Weber, Meloni Dario  
**License:** [LGPL][]  
**Platforms:** Windows, Linux, MacOS X  
**Added:** October 31, 2004

[**FreeImage**][FreeImage]  
freeimage.sourceforge.net  
**Description:** The library has been designed to be extremely simple in use and supports many formats.  
**Authors:** Herve Drolon, Floris van den Berg  
**License:** [FreeImage Open Source Dual-Licence][]  
**Platforms:** Windows, Linux, MacOS X  
**Added:** October 31, 2004

[**GFL SDK**][GFL SDK]  
perso.orange.fr/pierre.g/xnview/engfl.html  
**Description:** GFL SDK is a free library (used by XnView) for developers who would like to support graphics image formats easily.  
**License:** Free for non-commerical use  
**Added:** September 17, 2007

[**glpng**][glpng]  
www.wyatt100.freeserve.co.uk  
**Description:** A utility library for loading PNG files and bind them to an OpenGL texture with one simple call.  
**Author:** Ben Wyatt  
**Added:** February 29, 2008

[**GTL - Game Texture Loader**][GTL - Game Texture Loader]  
tgtl.sourceforge.net  
**Description:** The Game Texture Loader is very much just as it says, a library for loading texture formats commonly used in games.  
**License:** [zlib][]  
**Added:** September 17, 2007

[**ImageMagick**][ImageMagick]  
www.imagemagick.org/script/index.php  
**Description:** ImageMagick® is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (over 100) including DPX, EXR, GIF, JPEG, JPEG-2000, PDF, PhotoCD, PNG, Postscript, SVG, and TIFF. Use ImageMagick to translate, flip, mirror, rotate, scale, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.  
**License:** [GPL-compatible license][]  
**Added:** September 17, 2007

[**jpegxx**][jpegxx]  
www.mr-edd.co.uk/?page\_id=35  
**Description:** jpegxx is a library for loading and saving JPEG compressed images.  
**Author:** Edd Dawson  
**License:** [Boost software license version 1.0][]  
**Added:** October 8, 2007

[**libjpeg**][libjpeg]  
www.ijg.org  
**Added:** October 31, 2004

[**libpng - Portable Network Graphics**][libpng - Portable Network Graphics]  
www.libpng.org/pub/png/  
**License:** [zlib][]  
**Added:** October 31, 2004

[**LibTIFF**][LibTIFF]  
www.remotesensing.org/libtiff/  
**Description:** TIFF Library and Utilities.  
**Added:** September 17, 2007

[**LodePNG**][LodePNG]  
members.gamedev.net/lode/projects/LodePNG/  
**Description:** LodePNG is a PNG image decoder and encoder, all in one, no dependency or linkage to zlib or libpng required. It's made for C (ISO C90), and has a C++ wrapper with a more convenient interface on top.  
**Author:** Lode Vandevenne  
**Added:** February 26, 2008

[**Paintlib**][Paintlib]  
www.paintlib.de/paintlib/  
**Description:** A portable C++ class library for image loading, saving and manipulation. Images can be loaded from BMP, GIF, IFF, JPEG, PCX, PGM, PICT, PNG, PSD, SGI, TGA, TIFF and WMF files and saved in BMP, JPEG, PNG and TIFF formats. Image manipulation can be done either through filters implemented in filter classes or by directly accessing the bitmap bits.  
**Author:** Ulrich von Zadow  
**Added:** October 31, 2004

[**SDL\_image**][SDL_image]  
www.libsdl.org/projects/SDL\_image/  
**Description:** An image file loading library. It loads images as SDL surfaces, and supports the following formats: BMP, PNM, XPM, LBM, PCX, GIF, JPEG, PNG, TGA.  
**Authors:** Sam Lantinga, Mattias Engdegard  
**License:** [LGPL][]  
**Added:** October 31, 2004

[**SOIL - Simple OpenGL Image Library**][SOIL - Simple OpenGL Image Library]  
lonesock.net/soil.html  
**Description:** SOIL is a tiny C library used primarily for uploading textures into OpenGL.  
**License:** Public domain  
**Added:** September 17, 2007

[**stbi**][stbi]  
www.nothings.org/stb\_image.c  
**Description:** A public domain JPEG/PNG reader (reads JPEG, PNG, BMP, TGA, PSD, HDR, and writes BMP, TGA).  
**Author:** Sean Barrett  
**License:** Public domain  
**Added:** January 8, 2008

[**Titan**][Titan]  
titan.sourceforge.net  
**Description:** For still images, Titan can load/save most varieties from .TGA, .BMP, .PCX, .PNG and .JPG.  
**Author:** Dan Brown  
**License:** [zlib][]  
**Added:** September 17, 2007

Mathematics

[**Blitz++**][Blitz]  
www.oonumerics.org/blitz/  
**Description:** Blitz++ is a C++ class library for scientific computing.  
**License:** [Blitz++ Artistic License][Blitz_ Artistic License]  
**Added:** September 14, 2007

[**CML - Configurable Math Library**][CML _Configurable Math Library]  
cmldev.net  
**Description:** The CML (Configurable Math Library) is a free, open-source C++ math library designed for use in games, graphics, computational geometry, and related applications. It includes vector, matrix, and quaternion classes, and a large library of functions for manipulation of these types.  
**Author:** Jesse Anders  
**License:** [Boost Software License][Boost Software License 1]  
**Added:** March 27, 2008

[**Fast Math Routines**][Fast Math Routines]  
developer.nvidia.com/object/fast\_math\_routines.html  
**Description:** Collection of good fast math routines.  
**Author:** nVIDIA  
**License:** Free  
**Added:** October 31, 2004

[**Fixed Point**][Fixed Point]  
www.trenki.net  
**Description:** A small fixed point math library which consists of various functions for dealing with fixed point numbers (multiplication, division, inversion, sin, cos, sqrt, rsqrt). It also contains a C++ wrapper class which can be used to simplify working with fixed points numbers greatly. I used this fixed point number class in conjunction with my vector\_math library to obtain a fixed point vector math library. Doing so made the 3D computations a lot faster compared to the floating point version.  
**Author:** Markus Trenkwalder  
**Added:** September 14, 2007

[**GLM**][GLM]  
members.tripod.com/markus\_ilmola/  
**Description:** A math library for OpenGL with over 500 useful math functions for OpenGL.  
**Author:** Markus Ilmola  
**Added:** September 14, 2007

[**GMP**][GMP]  
gmplib.org  
**Description:** GMP is a free library for arbitrary precision arithmetic, operating on signed integers, rational numbers, and floating point numbers.  
**License:** [LGPL][]  
**Added:** October 8, 2007

[**MathGL++**][MathGL]  
mathgl-pp.sourceforge.net  
**Description:** MathGL++ is a class library for fast C++ maths for use in OpenGL C++ projects. Easy to use and similar to the OpenGL API. Matricies, Vectors, Quaternions, Linear polynomials with eigen systems are all going to be included.  
**Author:** Jacques Gasselin  
**License:** [LGPL][]  
**Added:** October 31, 2004

[**Mersenne Twister Random Number Generator**][Mersenne Twister Random Number Generator]  
www-personal.engin.umich.edu/~wagnerr/MersenneTwister.html  
**Description:** The Mersenne Twister is an algorithm for generating random numbers. It was designed with consideration of the flaws in various other generators. The period, 2^19937-1, and the order of equidistribution, 623 dimensions, are far greater. The generator is also fast; it avoids multiplication and division, and it benefits from caches and pipelines.  
**Author:** Rick Wagner  
**License:** Free  
**Added:** October 31, 2004

[**Vector Math**][Fixed Point]  
www.trenki.net  
**Description:** The vector\_math library (formerly math3d++) is a C++ 3d math library.  
**Author:** Markus Trenkwalder  
**License:** Free  
**Added:** October 31, 2004

[**VMath - Matrix Template Class**][File Logging Class]  
www.paulnettle.com  
**Description:** VMath is a powerful NxM matrix template class which includes full support for matrices, vectors, points, homogenous transforms and more.  
**Author:** Paul Nettle  
**License:** Free  
**Added:** October 31, 2004

Mesh Optimization and Preprocessing

[**ACTC - The Triangle Consolidator**][ACTC]  
www.plunk.org/~grantham/public/actc/index.html  
**Description:** ACTC makes triangle strips and fans out of independent indexed triangles.  
**Author:** Brad Grantham  
**License:** [free][free 1]  
**Added:** April 29, 2008

[**GTS - GNU Triangulated Surface Library**][GTS - GNU Triangulated Surface Library]  
gts.sourceforge.net  
**Description:** GTS stands for the GNU Triangulated Surface Library. It provides a set of useful functions to deal with 3D surfaces meshed with interconnected triangles including collision detection, multiresolution models, constrained Delaunay triangulations and robust set operations (union, intersection, differences).  
**License:** [LGPL][]  
**Added:** January 29, 2006

[**Mesh SDK**][The Mesh SDK]  
home.earthlink.net/~mmchow/meshsdk/meshsdk.html  
**Description:** The mesh sdk (gmeshsdk) is a useful geometry library for manipulating 3D meshes and geometry data. It is currently being used on a variety of graphics projects including real-time graphics viewers, 3D paint systems, visualizing complex 3D datasets, and optimizing graphics hardware performance.  
**Author:** Mike Chow  
**Added:** April 29, 2008

[**NvTriStrip Library**][NvTriStrip Library]  
developer.nvidia.com/object/nvtristrip\_library.html  
**Description:** NVTriStrip is a library for vertex cache aware stripification of geometry.  
**Author:** nVIDIA  
**Platforms:** API and OS independent  
**Added:** October 31, 2004

Model Handling & 3D Character Animation

[**Animadead**][Animadead]  
animadead.sourceforge.net  
**Description:** Animadead is a skeletal animation library designed to load and play skeletal animations. It supports models that are composed of several swappable meshes bound to a single skeleton that can be driven by multiple animations.  
**Author:** John Butterfield  
**License:** [LGPL][]  
**Added:** January 29, 2006

[**Cal3d**][Cal3d]  
cal3d.sourceforge.net  
**Description:** Cal3d is a skeletal based 3d character animation library written in C++ in a platform-/graphic API-independent way.  
**Author:** Bruno Heidelberger  
**License:** [LGPL][]  
**Platforms:** Windows, SGI Irix, various flavors of Linux, Mac OS X  
**Added:** October 31, 2004

[**GPUmesh**][GPUmesh]  
www-evasion.imag.fr/Membres/Sylvain.Lefebvre/GPUmesh/  
**Description:** The purpose of GPUmesh is to provide developers with a simple mechanism to send geometry to the GPU.  
**Author:** Sylvain Lefebvre  
**License:** Free  
**Platforms:** Windows, Linux  
**Added:** October 31, 2004

[**lib3DS**][lib3DS]  
lib3ds.sourceforge.net  
**Description:** lib3ds is a free ANSI-C library for working with the popular "3DS" 3D model format. lib3ds loads and saves Atmosphere settings, Background settings, Shadow map settings, Viewport setting, Materials, Cameras, Lights, Meshes, Hierarchy, Animation keyframes. It also contains useful matrix, vector and quaternion mathematics tools. lib3ds usually integrates well with OpenGL.  
**Author:** Jan Eric Kyprianidis  
**License:** [LGPL][]  
**Platforms:** Windows, Linux, Unix  
**Added:** October 31, 2004

[**libASE**][libASE]  
interreality.org/projects/libase  
**Description:** LibASE is a library for parsing and reading information out of ASE files, the "ASCII Scene Export" format of the 3D Studio and 3ds Max 3D modelling programs.  
**Author:** Peter Amstutz  
**License:** [LGPL][]  
**Platforms:** GNU/Linux, MacOS X  
**Added:** October 31, 2004

[**Trimeshloader**][Trimeshloader]  
trimeshloader.sourceforge.net  
**Description:** A flexible ANSI C trimesh loader.  
**Author:** Gero Müller  
**License:** [zlib][]  
**Added:** September 14, 2007

Multimedia/Game Libraries

[**Allegro**][Allegro]  
www.talula.demon.co.uk/allegro  
**Description:** Allegro is a game programming library for C/C++ developers which provides many functions for graphics, sounds, player input, and timers. It also provides fixed and floating point mathematical functions, 3D functions, file management functions, compressed datafile and a GUI.  
**License:** [Giftware License][]  
**Platforms:** DOS, Unix, Windows, QNX, BeOS, MacOS X  
**Added:** October 31, 2004

[**ClanLib Game SDK**][ClanLib Game SDK]  
www.clanlib.org  
**Description:** ClanLib is a cross platform C++ framework. Essentially the library offers a series of different functionality under a streamlined API. Its primary focus is on games, although its not limited for that usage only.  
**License:** [LGPL][]  
**Added:** October 31, 2004

[**PLIB - A Portable Games Library**][PLIB - A Portable Games Library]  
plib.sourceforge.net  
**Description:** PLIB includes sound effects, music, a complete 3D engine, font rendering, a simple Windowing library, a game scripting language, a GUI, networking, 3D math library and a collection of handy utility functions.  
**Author:** Steve J. Baker  
**License:** [LGPL][]  
**Added:** October 31, 2004

[**OSDL - Object-oriented Simple DirectMedia Layer**][OSDL - Object-oriented Simple DirectMedia Layer]  
osdl.sourceforge.net  
**Description:** The OSDL project has for goal to provide a free portable high-level open-source library for multimedia and game programming.  
**License:** [LGPL][]  
**Added:** October 16, 2007

[**PopCap Games Framework**][PopCap Games Framework]  
developer.popcap.com  
**License:** [Popcap License][]  
**Added:** October 31, 2004

[**SDL**][SDL]  
www.libsdl.org  
**Description:** Simple DirectMedia Layer is a cross-platform multimedia library designed to provide low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer.  
**Author:** Sam Lantinga  
**License:** [LGPL][]  
**Platforms:** Linux, Windows, BeOS, MacOS Classic, MacOS X, FreeBSD, OpenBSD, BSD/OS, Solaris, IRIX, and QNX  
**Added:** October 31, 2004

[**SFML - Simple and Fast Multimedia Library**][SFML - Simple and Fast Multimedia Library]  
sfml.sourceforge.net  
**Description:** SFML is a free multimedia C++ API that provides you low and high level access to graphics, input, audio, etc.  
**Author:** Laurent Gomila  
**License:** [zlib/png][zlib_png]  
**Added:** October 8, 2007

Networking

High-level

[**GNE - Game Networking Engine**][GNE]  
www.gillius.org/gne/  
**Description:** GNE, or the Game Networking Engine, is a cross-platform, multithreaded, C++ networking library with an API specifically addressing the needs of game networking.  
**Author:** Jason Winnebeck  
**License:** [LGPL][]  
**Added:** April 20, 2008

[**Net2**][Net2]  
www.gameprogrammer.com/net2/net2-1.html  
**Author:** Bob Pendleton  
**License:** [LGPL][]  
**Added:** September 25, 2007

[**OpenPlay**][OpenPlay]  
developer.apple.com/opensource/internet/openplay/index.html  
**Description:** OpenPlay is a cross-platform network abstraction layer designed to simplify the task of creating programs which communicate across multiple computers.  
**License:** [Apple Public Source License][]  
**Added:** September 17, 2007

[**OpenTNL - Torque Network Library**][OpenTNL - Torque Network Library]  
www.opentnl.org  
**Description:** The Torque Network Library is a robust, secure, easy to use, cross-platform C++ networking API designed for high performance simulations and games. The network architecture in TNL has powered some of the best internet multiplayer action games to date. Whether you're writing a multiplayer game, developing a complex simulation, or just need a solid foundation for network apps, TNL will meet your needs.  
**License:** [GPL (or indie or commercial)][GPL]  
**Added:** September 25, 2007

[**Raknet**][Raknet]  
www.rakkarsoft.com  
**Description:** Raknet is a cross platform C++ network library designed to allow programmers to add response time-critical network capabilities to their applications. It is mostly used for games, but is application independent.  
**License:** [Free for non-profit applications][]  
**Added:** September 17, 2007

[**ReplicaNet**][ReplicaNet]  
www.replicanet.com  
**Description:** ReplicaNet is an object oriented C++ library that is engineered to help the developer of applications that require a stable and low maintenance middleware solution to networking. Any project that is designed to use a network of machines, for example multiplayer computer games, need to consider very carefully how to approach the design problems associated with networking.  
**License:** [Free for non-commerical usage][]  
**Added:** September 25, 2007

[**Zoidcom**][Zoidcom]  
www.zoidcom.com  
**Description:** The Zoidcom network library is a high-level, UDP based networking library providing features for automatic replication of gameobjects and synchronization of their states over a network connection in a highly bandwidth efficient manner.  
**Author:** Jörg Rüppel  
**License:** Free for non-commerical usage  
**Added:** September 25, 2007

Low-level

[**DyConnect**][DyConnect]  
www.junction.bafsoft.com/\#dyconnect  
**Author:** Dave Stash  
**License:** [zlib][]  
**Added:** September 25, 2007

[**ENet**][ENet]  
enet.bespin.org  
**Description:** ENet's purpose is to provide a relatively thin, simple and robust network communication layer on top of UDP (User Datagram Protocol). The primary feature it provides is optional reliable, in-order delivery of packets.  
**License:** [Free][Free 2]  
**Added:** September 25, 2007

[**Etwork**][Etwork]  
www.mindcontrol.org/~hplus/etwork/  
**Description:** Etwork is a simple message-based network library, suitable for shuffling messages between a server and many clients, either using realiable, in-order delivery (TCP) or unreliable, out-of- order, possibly-duplicated delivery (UDP).  
**Author:** Jon Watte  
**License:** [MIT][]  
**Added:** September 25, 2007

[**HawkNL - Hawk Network Library**][HawkNL - Hawk Network Library]  
www.hawksoft.com/hawknl/  
**Description:** HawkNL is a fairly low level API, a wrapper over Berkeley/Unix Sockets and Winsock.  
**License:** [LGPL][]  
**Added:** September 17, 2007

[**libcurl**][libcurl]  
curl.haxx.se/libcurl/  
**Description:** libcurl is a free and easy-to-use client-side URL transfer library, supporting FTP, FTPS, HTTP, HTTPS, SCP, SFTP, TFTP, TELNET, DICT, LDAP, LDAPS and FILE. libcurl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, cookies, user+password authentication (Basic, Digest, NTLM, Negotiate, Kerberos4), file transfer resume, http proxy tunneling and more.  
**License:** [curl license][]  
**Added:** September 25, 2007

[**Pegasus Network Library**][Pegasus Network Library]  
plib.sourceforge.net/net/index.html  
**Description:** Pegasus is a C++ library for making networked games. Pegasus is based on Medusa and is part of PLIB. Pegasus, like Medusa, runs as a single process, multiplexing I/O with its various client and server connections within a single process/thread.  
**Author:** Steve J. Baker  
**License:** [LGPL][]  
**Added:** October 31, 2004

[**SDL\_net**][SDL_net]  
www.libsdl.org/projects/SDL\_net/  
**Description:** This is a small sample cross-platform networking library, with a sample chat client and server application. The chat client uses the GUIlib GUI framework library.  
**Authors:** Sam Lantinga, Roy Wood, Masahiro Minami  
**License:** [LGPL][]  
**Platforms:** All platforms supported by SDL.  
**Added:** October 31, 2004

Physics

[**Box2D Physics Engine**][Box2D]  
www.box2d.org  
**Description:** Box2D is a 2D rigid body simulation library for games and written in portable C++.  
**Author:** Erin Catto  
**License:** [zlib][]  
**Added:** April 20, 2008

[**Bullet**][Bullet]  
www.continuousphysics.com/Bullet/  
**Description:** Bullet is a 3D Collision Detection and Rigid Body Dynamics Library for games and animation.  
**Author:** Erwin Coumans  
**License:** [zlib][]  
**Added:** September 14, 2007

[**Cyclone Physics Simulator**][Cyclone Physics Simulator]  
www.procyclone.com  
**Author:** Ian Millington  
**Added:** March 22, 2008

[**EZPhysics - Physical Rigging**][EZPhysics - Physical Rigging]  
www.ezphysics.org  
**License:** [LGPL][]  
**Added:** September 25, 2007

[**Flatland**][Flatland]  
flatland.sourceforge.net/  
**Description:** Flatland is an object-oriented 2D collision library.  
**License:** [BSD][]  
**Added:** September 14, 2007

[**Havok**][Havok]  
tryhavok.intel.com  
**License:** Free for non-commercial use (requires registration)  
**Added:** July 1, 2008

[**Newton Game Dynamics**][Newton Game Dynamics]  
www.newtondynamics.com  
**Description:** Newton Game Dynamics is an integrated solution for real time simulation of physics environments. The API provides scene management, collision detection, dynamic behavior and yet it is small, fast, stable and easy to use.  
**Authors:** Julio Jerez, Alain Suero  
**License:** [Newton Game Dynamics SDK Setup License][]  
**Platforms:** Windows, Linux, MacOS X  
**Added:** October 31, 2004

[**OPAL**][OPAL]  
ox.slug.louisville.edu/~o0lozi01/opal\_wiki/index.php/Main\_Page  
**Description:** OPAL is a high-level interface for low-level physics engines used in games, robotics simulations, and other 3D applications. Features a simple C++ API, intuitive objects (e.g. Solids, Joints, Motors, Sensors), and XML-based file storage for complex objects.  
**Added:** October 31, 2004

[**Open Dynamics Engine**][Open Dynamics Engine]  
www.ode.org  
**Description:** ODE is an open source, high performance library for simulating rigid body dynamics. It is fully featured, stable, mature and platform independent with an easy to use C/C++ API. It has advanced joint types and integrated collision detection with friction. ODE is useful for simulating vehicles, objects in virtual reality environments and virtual creatures. It is currently used in many computer games, 3D authoring tools and simulation tools.  
**Author:** Russell Smith  
**License:** [BSD][]  
**Platforms:** Windows  
**Added:** October 31, 2004

[**Physical**][Physical]  
physical.alecrivers.com  
**Description:** Physical is a game creation system based on the foundation of an innovative 2D physics engine.  
**Author:** Alec Rivers  
**License:** Free  
**Added:** January 29, 2006

[**PhysX (formerly Novodex)**][PhysX _formerly Novodex]  
www.ageia.com/developers/downloads.html  
**Description:** AGEIA's PhysX Technology revolutionizes physics simulation with technologies designed for the future of console and PC gaming. The advances in next generation consoles and PC processors are staggering. The future is in multi-threaded, asynchronous, massively parallel-processing architectures.  
**Author:** AGEIA  
**License:** Free for non-commerical use  
**Platforms:** Windows  
**Added:** October 31, 2004

[**Tokamak Game Physics**][Tokamak Game Physics]  
www.tokamakphysics.com  
**Description:** Tokamak Game Physics SDK is a high performance real-time physics library designed specially for games. It has a high-level, simple to use programming interface. With Tokamak, game developers and designers are empowered to produce the next generation of interactive games.  
**License:** [Free][Free 3]  
**Platforms:** Windows  
**Added:** October 31, 2004

[**True Axis Physics SDK**][True Axis Physics SDK]  
www.trueaxis.com  
**Description:** The True Axis Physics SDK is a fast and solid real world physics simulation system designed for demanding games and virtual interactive environments.  
**Authors:** TRUE AXIS PTY LTD, Australia  
**License:** [Free for non-commercial use][Free for non-commercial use 3]  
**Platforms:** Windows  
**Added:** January 29, 2006

OpenGL

[**Cpw**][Cpw]  
www.mathies.com/cpw/about.html  
**Description:** Cpw is a application framework library for OpenGL applications and games. It is designed with speed, simplicity, and portability in mind.  
**Author:** Jim Mathies  
**License:** Free  
**Added:** October 6, 2007

[**FreeGLUT**][FreeGLUT]  
freeglut.sourceforge.net  
**Description:** FreeGLUT is a completely OpenSourced alternative to the OpenGL Utility Toolkit (GLUT) library which allows the user to create and manage windows containing OpenGL contexts on a wide range of platforms and also read the mouse, keyboard and joystick functions.  
**Author:** Originally written by Pawel W. Olszta with contributions from Andreas Umbach and Steve Baker  
**License:** X-Consortium License  
**Added:** October 31, 2004

[**GLFW**][GLFW]  
glfw.sourceforge.net  
**Description:** Free, open source, portable framework for OpenGL application development. In short, it is a link library that constitutes a powerful API for handling operating system specific tasks, such as opening an OpenGL window and reading keyboard, mouse and joystick input.  
**Author:** Marcus Geelnard  
**License:** [zlib][]  
**Platforms:** Windows, Linux, IRIX, FreeBSD, Solaris, QNX, MacOS X, AmigaOS, MS-DOS  
**Added:** October 31, 2004

[**GLH - Graphics Library Helper**][GLH - Graphics Library Helper]  
www.geocities.com/vmelkon/glhlibrary.html  
**Description:** glh is kind of like OpenGL's GLU but contains extra functions and optimized functions.  
**Author:** Vrej Melkonian  
**License:** Free  
**Added:** March 28, 2005

[**Ivf++ - Interactive Visualisation Framework**][Ivf_ - Interactive Visualisation Framework]  
gorkon.byggmek.lth.se/ivfweb/  
**Authors:** Jonas Lindemann, Carl-Johan Lejdfors, Pierre Olsson  
**License:** [LGPL][]  
**Added:** October 31, 2004

[**libQGLViewer**][libQGLViewer]  
artis.imag.fr/Membres/Gilles.Debunne/QGLViewer/  
**Description:** libQGLViewer is a C++ library based on Qt that eases the creation of OpenGL 3D viewers. It provides some of the typical 3D viewer functionalities, such as the possibility to move the camera using the mouse, which lacks in most of the other APIs.  
**License:** [Dual Licensing][]  
**Added:** July 1, 2008

[**OpenGL Window Framework**][OpenGL Window Framework]  
oglwfw.sourceforge.net  
**Description:** Framework for creating and controlling windows capible of holding an OpenGL rendering context in it.  
**Author:** Rob Jones  
**License:** [zlib][]  
**Added:** October 31, 2004

[**OpenGLUT**][OpenGLUT]  
openglut.sourceforge.net  
**Description:** OpenGLUT is an open source project to evolve the GLUT (OpenGL Utility Toolkit) C/C++ API. OpenGLUT uses the freeglut code base as a foundation for extending, enhancing and refining the API.  
**Authors:** Richard Rauch, Nigel Stewart, John F. Fay  
**Added:** October 31, 2004

OpenGL Extension Handling

[**GLee**][GLee]  
elf-stone.com/glee.php  
**Description:** The OpenGL Easy Extension library (GLee) makes life easier for OpenGL developers by automatically linking OpenGL extensions and core functions at initialisation time. This saves programmers the effort of manually linking every required extension, and effectively brings the OpenGL library up to date.  
**Author:** Ben Woodhouse  
**Added:** October 31, 2004

[**GLEW - The OpenGL Extension Wrangler Library**][GLEW - The OpenGL Extension Wrangler Library]  
glew.sourceforge.net  
**Description:** The OpenGL Extension Wrangler Library (GLEW) is a cross-platform C/C++ extension loading library. GLEW provides efficient run-time mechanisms for determining which OpenGL extensions are supported on the target platform. OpenGL core and extension functionality is exposed in a single header file.  
**License:** [BSD][BSD 1]  
**Added:** October 31, 2004

[**OglExt**][OglExt]  
www.julius.caesar.de/oglext/  
**Description:** OglExt is a free OpenGL extension library, enabling the easy access of all functionality up to OpenGL version 1.5 as well as API functions of more than 200 OpenGL extensions.  
**Author:** Research Center Caesar  
**License:** [LGPL][]  
**Added:** October 31, 2004

Scripting Languages

[**Angelcode Scripting Library**][Angelcode Scripting Library]  
www.angelcode.com/angelscript/  
**Author:** Andreas Jönsson  
**License:** [zlib][]  
**Added:** September 13, 2007

[**GameMonkey Script**][GameMonkey Script]  
www.somedude.net/gamemonkey/  
**Description:** GameMonkey is a embedded scripting language that is intended for use in game and tool applications. GameMonkey is however suitable for use in any project requiring simple scripting support. GameMonkey borrows concepts from Lua (www.lua.org), but uses syntax similar to C, making it more accessible to game programmers. GameMonkey also natively supports multithreading and the concept of states.  
**Authors:** Matthew Riek, Greg Douglas  
**License:** [MIT][MIT 1]  
**Added:** September 13, 2007

[**Lua**][Lua]  
www.lua.org/  
**Description:** Lua is a powerful, fast, light-weight, embeddable scripting language.  
**License:** [MIT][MIT 2]  
**Added:** September 13, 2007

[**Python Programming Language**][Python Programming Language]  
www.python.org  
**Added:** September 13, 2007

[**Ruby**][Ruby]  
www.ruby-lang.org/en/  
**Description:** A dynamic, open source programming language with a focus on simplicity and productivity. It has an elegant syntax that is natural to read and easy to write.  
**Added:** September 13, 2007

[**Squirrel**][Squirrel]  
squirrel-lang.org  
**Description:** Squirrel is a high level imperative/OO programming language, designed to be a powerful scripting tool that fits in the size, memory bandwidth, and real-time requirements of applications like games.  
**License:** [zlib][]  
**Added:** September 13, 2007

SDL - Simple DirectMedia Layer

[**SDL\_draw**][SDL_draw]  
sdl-draw.sourceforge.net  
**Description:** SDL\_draw is a simple library to draw basic elements, like points, lines and circles, on SDL surfaces.  
**Authors:** Mario Palomo, José de la Huerga, Pepe González  
**License:** [LGPL][]  
**Added:** October 8, 2007

[**SDL\_ttf**][SDL_ttf]  
www.libsdl.org/projects/SDL\_ttf/  
**Description:** This is a sample library which allows you to use TrueType fonts in your SDL applications. It comes with an example program "showfont" which displays an example string for a given TrueType font file.  
**Author:** Sam Lantinga  
**License:** [LGPL][]  
**Added:** October 8, 2007

Visualization

[**Visualization Library**][Visualization Library]  
www.visualizationlibrary.com  
**Description:** Visualization Library is an open source C++ middleware for 2D/3D graphics applications based on OpenGL 2.1, designed to develop portable applications for the Windows XP, Windows Vista and Linux/X11 operating systems.  
**Author:** Michele Bosi  
**License:** Dual licensing model: GNU GPL 3/Commercial license  
**Added:** July 1, 2008

Widget Toolkits

[**FLTK - Fast Light Toolkit**][FLTK]  
www.fltk.org  
**Description:** FLTK is a cross-platform C++ GUI toolkit and provides modern GUI functionality without the bloat and supports 3D graphics via OpenGL and its built-in GLUT emulation.  
**License:** [LGPL][]  
**Added:** July 1, 2008

[**FOX Toolkit**][FOX Toolkit]  
www.fox-toolkit.org  
**Description:** The FOX toolkit is an open source, cross-platform widget toolkit, that is, a library of basic elements for building a graphical user interface.  
**License:** [LGPL][]  
**Added:** July 1, 2008

[**Qt**][Qt Cross-Platform Application Framework]  
trolltech.com/products/qt/  
**Description:** Qt is a cross-platform application framework for desktop and embedded development. It includes an intuitive API and a rich C++ class library, integrated tools for GUI development and internationalization, and support for Java™ and C++ development.  
**Author:** Trolltech  
**License:** [Qt Licensing][]  
**Added:** July 1, 2008

[**wxWidgets**][wxWidgets]  
www.wxwidgets.org  
**Description:** wxWidgets lets developers create applications for Win32, Mac OS X, GTK+, X11, Motif, WinCE, and more using one codebase. It can be used from languages such as C++, Python, Perl, and C\#/.NET. Unlike other cross-platform toolkits, wxWidgets applications look and feel native. This is because wxWidgets uses the platform's own native controls rather than emulating them. It's also extensive, free, open-source, and mature.  
**Added:** July 1, 2008

XML

[**Expat XML Parser**][Expat XML Parser]  
expat.sourceforge.net  
**Description:** Expat is an XML parser library written in C. It is a stream-oriented parser in which an application registers handlers for things the parser might find in the XML document.  
**License:** [LGPL][]  
**Platforms:** Cross-platform  
**Added:** October 31, 2004

[**ezXML**][ezXML]  
ezxml.sourceforge.net  
**Description:** ezXML is a C library for parsing XML documents inspired by simpleXML for PHP. As the name implies, it's easy to use. It's ideal for parsing XML configuration files or REST web service responses. It's also fast and lightweight (less than 20k compiled).  
**Author:** Aaron Voisine  
**License:** [MIT][]  
**Added:** January 29, 2006

[**irrXML**][irrXML]  
www.ambiera.com/irrxml/index.html  
**Description:** irrXML is a simple and fast open source xml parser for C++.  
**Author:** Nikolaus Gebhardt  
**License:** [irrXML License][]  
**Added:** September 17, 2007

[**Libxml2**][Libxml2]  
www.xmlsoft.org  
**Description:** A XML C parser and toolkit developed for the Gnome project.  
**License:** [MIT][MIT 1]  
**Platforms:** Linux, Unix, Windows, CygWin, MacOS, MacOS X, UNIX, OS/2  
**Added:** October 31, 2004

[**TinyXml**][TinyXml]  
www.grinninglizard.com/tinyxml/index.html  
**Description:** A simple, small, C++ XML parser that can be easily integrating into other programs.  
**Author:** Lee Thomason  
**License:** [zlib][]  
**Added:** October 31, 2004

[**Xerces-C++**][Xerces-C]  
xerces.apache.org/xerces-c/  
**Description:** Xerces-C++ is a validating XML parser written in a portable subset of C++. Xerces-C++ makes it easy to give your application the ability to read and write XML data.  
**License:** [Apache Software License][]  
**Added:** September 17, 2007

[**XMLite**][XMLite]  
www.codeproject.com/cpp/xmlite.asp  
**Description:** Easy to access and simple XML parser.  
**Author:** Kyung-min Cho  
**Platforms:** Windows  
**Added:** October 31, 2004

[**XMLParser**][XMLParser]  
www.applied-mathematics.net/tools/xmlParser.html  
**Description:** Small, simple, cross-platform, free and fast C++ XML Parser  
**Author:** Frank Vanden Berghen  
**License:** Aladdin Free Public License (AFPL) (other licenses on request for free)  
**Platforms:** Solaris, Linux, Windows  
**Added:** February 6, 2008

Unsorted

[**The Demo Effect Collection**][The Demo Effect Collection]  
demo-effects.sourceforge.net  
**Description:** This is not only a collection of demo effects from the early days of the demo scene (for instance the Amiga demo scene in the late eighties ) but also a multi-layered run-time pluggable demo effects system, with support for filters and transition effects. which can be used to create demo's.  
**Author:** W.P. van Paassen  
**License:** [GPL][]  
**Platforms:** Windows, any Unix flavoured OS  
**Added:** October 31, 2004

[**GUL - Geometry Utility Library**][Geometry Utility Library]  
gul.sourceforge.net  
**Description:** GUL is a library of C++ functions. It mainly contains basic functions for tesselating and manipulating NURBS curves and surfaces, as well as functions for interpolating and approximating data points with NURBS curves and surfaces.  
**Added:** July 1, 2008

[**Hermes**][Hermes]  
www.clanlib.org/hermes/  
**Description:** Hermes is a pixel conversion library. Its only purpose is to take a buffer full of pixels and convert it into a target buffer full of pixels. The two can differ both in size and in format. Hermes is primarily intended for fast graphics display and it is optimized for that.  
**License:** [LGPL][]  
**Added:** October 31, 2004

[**libavg**][libavg]  
www.libavg.de  
**Description:** libavg is an effort to do for multimedia installations what the Gimp did for image editing.  
**Author:** Ulrich von Zadow  
**Platforms:** Linux  
**Added:** October 31, 2004

[**libsigc++**][libsigc]  
libsigc.sourceforge.net  
**Description:** libsigc++ implements a typesafe callback system for standard C++. It allows you to define signals and to connect those signals to any callback function, either global or a member function, regardless of whether it is static or virtual.  
**Authors:** Tero Pulkkinen, Karl Nelson, Murray Cumming, Martin Schulze  
**License:** [LGPL][]  
**Platforms:** Windows, Linux, Unix  
**Added:** January 8, 2006

[**METIS - Serial Graph Partitioning and Fill-reducing Matrix Ordering**][METIS - Serial Graph Partitioning and Fill-reducing Matrix Ordering]  
glaros.dtc.umn.edu/gkhome/metis/metis/overview  
**Description:** METIS is a set of serial programs for partitioning graphs, partitioning finite element meshes, and producing fill reducing orderings for sparse matrices.  
**Author:** George Karypis  
**License:** [Free][Free 4]  
**Added:** October 30, 2007

[**Loki**][Loki]  
sourceforge.net/projects/loki-lib/  
**Description:** A C++ library of designs, containing flexible implementations of common design patterns and idioms.  
**License:** [MIT][]  
**Platforms:** Portable  
**Added:** January 29, 2006

[**Particle System API**][Particle System API]  
www.particlesystems.org  
**Description:** The Particle System API allows you to easily include dynamic simulations of groups of moving objects. This is especially useful for eye candy in games, virtual environments and other interactive graphics apps, but can also be used in off-line animation software.  
**Author:** David K. McAllister  
**Platforms:** Windows  
**Added:** October 31, 2004

[**Pixel Toaster**][Pixel Toaster]  
www.pixeltoaster.com  
**Description:** Open Source C++ library for realtime software rendering.  
**Author:** Glenn Fiedler  
**Added:** October 31, 2004

[**SPL - Simple Plugin Layer**][SPL - Simple Plugin Layer]  
www.unitedbytes.de/go.php?site=spl  
**Description:** The SPL (Simple Plugin Layer) library is an open source SDK for plugin development. With SPL you can extend every application written in C/C++ to use your own plugins, SPL will do all the managing, loading and unloading stuff for you. Additionally, the whole framework is fully multi-platform capable, so you don't have to develop multiple versions of the same plugin for platforms provided by SPL.  
**Author:** United Bytes  
**License:** [LGPL][]  
**Platforms:** Windows, Linux, Solaris

[http_www.codemonsters.de_home_content.php_show_freelibraries_2]: http://www.codemonsters.de/home/content.php?show=freelibraries#2
[Ben Sizer]: http://www.twilightsembrace.com/personal/gamelibs.php
[Gamedev.net_s community forum]: http://www.gamedev.net/community/forums/
[2D Graphics]: http://writeblog.csdn.net/#1
[3D Graphics Engines]: http://writeblog.csdn.net/#2
[3D Game Engines]: http://writeblog.csdn.net/#3
[Artificial Intelligence]: http://writeblog.csdn.net/#4
[Audio _Sound _ Music]: http://writeblog.csdn.net/#5
[Collision Detection]: http://writeblog.csdn.net/#6
[Compression]: http://writeblog.csdn.net/#7
[Encryption]: http://writeblog.csdn.net/#8
[Font Handling]: http://writeblog.csdn.net/#9
[General Purpose]: http://writeblog.csdn.net/#10
[Graphical User Interfaces]: http://writeblog.csdn.net/#11
[Image Handling]: http://writeblog.csdn.net/#12
[Mathematics]: http://writeblog.csdn.net/#13
[Mesh Optimization and Preprocessing]: http://writeblog.csdn.net/#14
[Model Handling _ 3D Character Animation]: http://writeblog.csdn.net/#15
[Multimedia_Game Libraries]: http://writeblog.csdn.net/#16
[Networking]: http://writeblog.csdn.net/#17
[Physics]: http://writeblog.csdn.net/#18
[OpenGL]: http://writeblog.csdn.net/#19
[OpenGL Extension Handling]: http://writeblog.csdn.net/#20
[Scripting Languages]: http://writeblog.csdn.net/#21
[SDL - Simple DirectMedia Layer]: http://writeblog.csdn.net/#22
[Visualization]: http://writeblog.csdn.net/#23
[Widget Toolkits]: http://writeblog.csdn.net/#24
[XML]: http://writeblog.csdn.net/#25
[Unsorted]: http://writeblog.csdn.net/#26
[Arauna]: http://igad.nhtv.nl/~bikker/
[Phya]: http://www.zenprobe.com/phya/
[Drome Engine]: http://www.3ddrome.com/engine.php
[dclib]: http://dclib.sourceforge.net/
[Detours]: http://research.microsoft.com/sn/detours/
[Geometry Utility Library]: http://gul.sourceforge.net/
[Havok]: http://tryhavok.intel.com/
[libQGLViewer]: http://artis.imag.fr/Membres/Gilles.Debunne/QGLViewer/
[libRocket]: http://www.librocket.com/
[Pantheios]: http://pantheios.sourceforge.net/
[POCO C_ Libraries]: http://pocoproject.org/
[Tiny Template Library]: http://tinytl.sourceforge.net/
[Visualization Library]: http://www.visualizationlibrary.com/
[FLTK]: http://www.fltk.org/
[FOX Toolkit]: http://www.fox-toolkit.org/
[Qt Cross-Platform Application Framework]: http://trolltech.com/products/qt/
[wxWidgets]: http://www.wxwidgets.org/
[ACTC]: http://www.plunk.org/~grantham/public/actc/index.html
[The Mesh SDK]: http://home.earthlink.net/~mmchow/meshsdk/meshsdk.html
[AES]: http://www.lomont.org/Software/Misc/AES/AES.php
[Box2D]: http://www.box2d.org/
[Glyph Keeper]: http://kd.lab.nig.ac.jp/glyph-keeper/
[GNE]: http://www.gillius.org/gne/
[PMASK]: http://sourceforge.net/projects/pmask/
[CML _Configurable Math Library]: http://cmldev.net/
[FreeSG]: http://www.freesg.org/
[Cyclone Physics Simulator]: http://www.procyclone.com/
[Right Brain Games GUI]: http://www.rightbraingames.com/tech.php
[Wild Magic Graphics Engine]: http://www.geometrictools.com/
[Dirent]: http://www.two-sdg.demon.co.uk/curbralan/code/dirent/dirent.html
[glpng]: http://www.wyatt100.freeserve.co.uk/
[LodePNG]: http://members.gamedev.net/lode/projects/LodePNG/
[XMLParser]: http://www.applied-mathematics.net/tools/xmlParser.html
[stbi]: http://www.nothings.org/stb_image.c
[CDX Library]: http://www.cdxlib.com/
[Eclipse 2D Game Engine]: http://eclipseeng.sourceforge.net/
[LGPL]: http://opensource.org/licenses/lgpl-license.html
[Golden T Game Engine]: http://goldenstudios.or.id/products/GTGE/
[hxRender]: http://mavweb.mnsu.edu/longaj/hxrender/
[zlib]: http://www.opensource.org/licenses/zlib-license.php
[Haaf_s Game Engine - Hardware accelerated 2D game engine]: http://hge.relishgames.com/
[Free for non-commercial use]: http://hge.relishgames.com/license.html
[Crystal Space 3D]: http://www.crystalspace3d.org/
[Delta3D]: http://delta3d.org/
[Demeter Terrain Engine]: http://demeter.sourceforge.net/
[ExNihilo]: http://www.ploksoftware.org/
[G3D C_ Library]: http://g3d-cpp.sourceforge.net/
[BSD]: http://www.opensource.org/licenses/bsd-license.php
[Genesis3D Engine]: http://www.genesis3d.com/
[Horde3D - Next-Generation Graphics Engine]: http://www.nextgen-engine.net/
[Irrlicht Engine]: http://irrlicht.sourceforge.net/
[Jet3D]: http://www.jet3d.com/
[Lightfeather]: http://lf.mmdevel.de/news.php
[zlib_libpng]: http://lf.mmdevel.de/content.php?content.11
[Nebula Device 2]: http://nebuladevice.cubik.org/
[NVSG SDK]: http://developer.nvidia.com/object/nvsg_home.html
[Ogre3D]: http://www.ogre3d.org/
[OpenSceneGraph]: http://www.openscenegraph.org/
[OpenSceneGraph Public License _based on the LGPL]: http://www.openscenegraph.org/osgwiki/uploads/Legal/LICENSE.txt
[SGL - A 3D Scene Graph Library]: http://sgl.sourceforge.net/
[SxDL Game Development Toolkit]: http://sxdl.sourceforge.net/
[GPL]: http://opensource.org/licenses/gpl-license.php
[XEngine]: http://xengine.sourceforge.net/
[Yake]: http://www.yake.org/
[Apocalyx]: http://apocalyx.sourceforge.net/
[Cube Engine]: http://www.cubeengine.com/
[Fly3D]: http://www.fly3d.com.br/
[NeoEngine]: http://www.neoengine.org/
[MPL]: http://www.opensource.org/licenses/mozilla1.1.php
[Panda3D]: http://panda3d.etc.cmu.edu/
[Free]: http://panda3d.etc.cmu.edu/docs/license/
[QuakeForge]: http://www.quakeforge.net/
[Tenebrae]: http://tenebrae.sourceforge.net/
[FEAR - Foundations for Genuine Game AI]: http://fear.sourceforge.net/
[MicroPather]: http://www.grinninglizard.com/MicroPather/
[OpenSteer]: http://opensteer.sourceforge.net/
[MIT]: http://opensource.org/licenses/mit-license.php
[PathLib - Game Pathfinding Library]: http://pathlib.hildebrand.cz/pathlib.html
[Audiere]: http://audiere.sourceforge.net/
[BASS Audio Library]: http://www.un4seen.com/
[Free for non-commercial use 1]: http://www.un4seen.com/bass.html#license
[FMOD Sound System]: http://www.fmod.org/
[Free for non-commercial use 2]: http://www.fmod.org/ifmodlicense.html
[FreeSL - Free Sound Library]: http://www.lukasheise.com/web_res/freesl.html
[Hekkus Sound System]: http://www.shlzero.com/
[irrKlang]: http://www.ambiera.com/irrklang/index.html
[irrKlang License]: http://www.ambiera.com/irrklang/license.html
[Libsndfile]: http://www.mega-nerd.com/libsndfile/
[libMikMod]: http://mikmod.raphnet.net/
[Ogg Vorbis]: http://www.vorbis.com/
[BSD-like]: http://www.xiph.org/licenses/bsd/
[OpenAL]: http://www.openal.org/
[Open Source Audio Library Project]: http://osalp.sourceforge.net/
[PortAudio]: http://www.portaudio.com/
[Free 1]: http://www.portaudio.com/license.html
[SDL_mixer]: http://www.libsdl.org/projects/SDL_mixer/
[SDL_sound]: http://icculus.org/SDL_sound/
[Bitmask]: http://people.ifm.liu.se/ulfek/bitmask/
[ColDet - Free 3D Collision Detection Library]: http://photoneffect.com/coldet/
[FreeSOLID - Software Library for Interference Detection]: http://www.win.tue.nl/~gino/solid/index.html
[GImpact]: http://gimpact.sourceforge.net/
[OPCODE - Optimized Collision Detection]: http://www.codercorner.com/Opcode.htm
[RAPID - Robust and Accurate Polygon Interference Detection]: http://www.cs.unc.edu/~geom/OBB/OBBT.html
[V-Collide - Collision Detection for Arbitrary Polygonal Objects]: http://www.cs.unc.edu/~geom/V_COLLIDE/
[bzip2]: http://www.bzip.org/
[LZMA SDK]: http://www.7-zip.org/sdk.html
[LZO]: http://www.oberhumer.com/opensource/lzo/
[GPL 1]: http://www.oberhumer.com/opensource/gpl.html
[Minizip_ Zip and UnZip additionnal library]: http://www.winimage.com/zLibDll/minizip.html
[szip]: http://www.compressconsult.com/szip/
[unrarlib - Unique RAR File Library]: http://www.unrarlib.org/
[ZipArchive]: http://www.artpol-software.com/ZipArchive/
[Licensing information]: http://www.artpol-software.com/ZipArchive/KB/license.aspx
[ZipStream_Bzip2Stream]: http://www.codeproject.com/vcpp/stl/zipstream.asp
[Zlib - A Massively Spiffy Yet Delicately Unobtrusive Compression Library]: http://www.zlib.net/
[zziplib]: http://zziplib.sourceforge.net/
[LGPL_MPL]: http://zziplib.sourceforge.net/copying.html
[Crypto_ Library]: http://www.eskimo.com/~weidai/cryptlib.html
[Public Domain]: http://www.eskimo.com/~weidai/License.txt
[Cryptlib]: http://www.cs.auckland.ac.nz/~pgut001/cryptlib/
[Distributed under a dual license _free_ open-source as a GPL-like license and closed-source use under a standard commercial license]: http://www.cs.auckland.ac.nz/~pgut001/cryptlib/download.html
[LockBox]: http://sourceforge.net/projects/tplockbox/
[FTGL]: http://homepages.paradise.net.nz/henryj/code/index.html
[FreeType]: http://www.freetype.org/
[FreeType License_GPL]: http://freetype.sourceforge.net/license.html
[GLFT_Font]: http://www.cs.rit.edu/~jpt2433/glftfont/
[free]: http://kd.lab.nig.ac.jp/glyph-keeper/license.txt
[SFont]: http://www.linux-games.com/sfont/
[boost - C_ libraries]: http://www.boost.org/
[Boost license]: http://www.boost.org/more/license_info.html
[Ceylan]: http://ceylan.sourceforge.net/
[Chattering Pixels]: http://www.chatteringpixels.com/products.php
[Boost Software License]: http://dclib.sourceforge.net/license.html
[File Logging Class]: http://www.paulnettle.com/
[Garbage Collector]: http://www.hpl.hp.com/personal/Hans_Boehm/gc/
[Google-Sparsehash]: http://sourceforge.net/projects/goog-sparsehash
[Image Debugger]: http://billbaxter.com/projects/imdebug/
[IProf]: http://silverspaceship.com/src/iprof/
[OIS - Object-Oriented Input System]: http://www.wreckedgames.com/wiki/index.php/WreckedLibs:OIS
[PhysicsFS]: http://icculus.org/physfs/
[POCO_Boost Software License]: http://pocoproject.org/poco/info/license.html
[SDL_Config]: http://student.agh.edu.pl/~koshmaar/SDL_Config/
[SQLite]: http://www.sqlite.org/
[CEGUI - Crazy Eddie_s GUI System]: http://www.cegui.org.uk/modules/news/
[LibUFO]: http://libufo.sourceforge.net/
[ParaGUI]: http://www.paragui.org/
[SDL_Console]: http://sdlconsole.sourceforge.net/
[AfterImage]: http://www.afterstep.org/afterimage/
[CImg - C_ Template Image Processing Library]: http://cimg.sourceforge.net/
[CeCiLL License]: http://www.cecill.info/licences/Licence_CeCILL_V2-en.html
[Corona]: http://corona.sourceforge.net/
[CxImage]: http://www.xdp.it/cximage.htm
[DevIL]: http://openil.sourceforge.net/
[FreeImage]: http://freeimage.sourceforge.net/
[FreeImage Open Source Dual-Licence]: http://freeimage.sourceforge.net/license.html
[GFL SDK]: http://perso.orange.fr/pierre.g/xnview/engfl.html
[GTL - Game Texture Loader]: http://tgtl.sourceforge.net/
[ImageMagick]: http://www.imagemagick.org/script/index.php
[GPL-compatible license]: http://www.imagemagick.org/script/license.php
[jpegxx]: http://www.mr-edd.co.uk/?page_id=35
[Boost software license version 1.0]: http://www.boost.org/LICENSE_1_0.txt
[libjpeg]: http://www.ijg.org/
[libpng - Portable Network Graphics]: http://www.libpng.org/pub/png/
[LibTIFF]: http://www.remotesensing.org/libtiff/
[Paintlib]: http://www.paintlib.de/paintlib/
[SDL_image]: http://www.libsdl.org/projects/SDL_image/
[SOIL - Simple OpenGL Image Library]: http://lonesock.net/soil.html
[Titan]: http://titan.sourceforge.net/
[Blitz]: http://www.oonumerics.org/blitz/
[Blitz_ Artistic License]: http://www.oonumerics.org/blitz/legal/
[Boost Software License 1]: http://cmldev.net/?p=430
[Fast Math Routines]: http://developer.nvidia.com/object/fast_math_routines.html
[Fixed Point]: http://www.trenki.net/
[GLM]: http://members.tripod.com/markus_ilmola/
[GMP]: http://gmplib.org/
[MathGL]: http://mathgl-pp.sourceforge.net/
[Mersenne Twister Random Number Generator]: http://www-personal.engin.umich.edu/~wagnerr/MersenneTwister.html
[free 1]: http://www.plunk.org/~grantham/public/actc/LICENSE
[GTS - GNU Triangulated Surface Library]: http://gts.sourceforge.net/
[NvTriStrip Library]: http://developer.nvidia.com/object/nvtristrip_library.html
[Animadead]: http://animadead.sourceforge.net/
[Cal3d]: http://cal3d.sourceforge.net/
[GPUmesh]: http://www-evasion.imag.fr/Membres/Sylvain.Lefebvre/GPUmesh/
[lib3DS]: http://lib3ds.sourceforge.net/
[libASE]: http://interreality.org/projects/libase
[Trimeshloader]: http://trimeshloader.sourceforge.net/
[Allegro]: http://www.talula.demon.co.uk/allegro
[Giftware License]: http://www.talula.demon.co.uk/allegro/license.html
[ClanLib Game SDK]: http://www.clanlib.org/
[PLIB - A Portable Games Library]: http://plib.sourceforge.net/
[OSDL - Object-oriented Simple DirectMedia Layer]: http://osdl.sourceforge.net/
[PopCap Games Framework]: http://developer.popcap.com/
[Popcap License]: http://developer.popcap.com/license.php
[SDL]: http://www.libsdl.org/
[SFML - Simple and Fast Multimedia Library]: http://sfml.sourceforge.net/
[zlib_png]: http://sfml.sourceforge.net/license.php
[Net2]: http://www.gameprogrammer.com/net2/net2-1.html
[OpenPlay]: http://developer.apple.com/opensource/internet/openplay/index.html
[Apple Public Source License]: http://www.opensource.apple.com/apsl/
[OpenTNL - Torque Network Library]: http://www.opentnl.org/
[Raknet]: http://www.rakkarsoft.com/
[Free for non-profit applications]: http://creativecommons.org/licenses/by-nc/2.5/
[ReplicaNet]: http://www.replicanet.com/
[Free for non-commerical usage]: http://www.replicanet.com/pricing.html
[Zoidcom]: http://www.zoidcom.com/
[DyConnect]: http://www.junction.bafsoft.com/#dyconnect
[ENet]: http://enet.bespin.org/
[Free 2]: http://enet.bespin.org/License.html
[Etwork]: http://www.mindcontrol.org/~hplus/etwork/
[HawkNL - Hawk Network Library]: http://www.hawksoft.com/hawknl/
[libcurl]: http://curl.haxx.se/libcurl/
[curl license]: http://curl.haxx.se/docs/copyright.html
[Pegasus Network Library]: http://plib.sourceforge.net/net/index.html
[SDL_net]: http://www.libsdl.org/projects/SDL_net/
[Bullet]: http://www.continuousphysics.com/Bullet/
[EZPhysics - Physical Rigging]: http://www.ezphysics.org/
[Flatland]: http://flatland.sourceforge.net/
[Newton Game Dynamics]: http://www.newtondynamics.com/
[Newton Game Dynamics SDK Setup License]: http://www.physicsengine.com/downloads.html
[OPAL]: http://ox.slug.louisville.edu/~o0lozi01/opal_wiki/index.php/Main_Page
[Open Dynamics Engine]: http://www.ode.org/
[Physical]: http://physical.alecrivers.com/
[PhysX _formerly Novodex]: http://www.ageia.com/developers/downloads.html
[Tokamak Game Physics]: http://www.tokamakphysics.com/
[Free 3]: http://www.tokamakphysics.com/nclicense.htm
[True Axis Physics SDK]: http://www.trueaxis.com/
[Free for non-commercial use 3]: http://www.trueaxis.com/downloads.html#NonCommercial
[Cpw]: http://www.mathies.com/cpw/about.html
[FreeGLUT]: http://freeglut.sourceforge.net/
[GLFW]: http://glfw.sourceforge.net/
[GLH - Graphics Library Helper]: http://www.geocities.com/vmelkon/glhlibrary.html
[Ivf_ - Interactive Visualisation Framework]: http://gorkon.byggmek.lth.se/ivfweb/
[Dual Licensing]: http://trolltech.com/company/about/businessmodel
[OpenGL Window Framework]: http://oglwfw.sourceforge.net/
[OpenGLUT]: http://openglut.sourceforge.net/
[GLee]: http://elf-stone.com/glee.php
[GLEW - The OpenGL Extension Wrangler Library]: http://glew.sourceforge.net/
[BSD 1]: http://opensource.org/licenses/bsd-license.php
[OglExt]: http://www.julius.caesar.de/oglext/
[Angelcode Scripting Library]: http://www.angelcode.com/angelscript/
[GameMonkey Script]: http://www.somedude.net/gamemonkey/
[MIT 1]: http://www.opensource.org/licenses/mit-license.html
[Lua]: http://www.lua.org/
[MIT 2]: http://www.lua.org/license.html
[Python Programming Language]: http://www.python.org/
[Ruby]: http://www.ruby-lang.org/en/
[Squirrel]: http://squirrel-lang.org/
[SDL_draw]: http://sdl-draw.sourceforge.net/
[SDL_ttf]: http://www.libsdl.org/projects/SDL_ttf/
[Qt Licensing]: http://trolltech.com/products/qt/learnmore/licensing-pricing/licensing
[Expat XML Parser]: http://expat.sourceforge.net/
[ezXML]: http://ezxml.sourceforge.net/
[irrXML]: http://www.ambiera.com/irrxml/index.html
[irrXML License]: http://www.ambiera.com/irrxml/license.html
[Libxml2]: http://www.xmlsoft.org/
[TinyXml]: http://www.grinninglizard.com/tinyxml/index.html
[Xerces-C]: http://xerces.apache.org/xerces-c/
[Apache Software License]: http://www.apache.org/licenses/LICENSE-2.0.html
[XMLite]: http://www.codeproject.com/cpp/xmlite.asp
[The Demo Effect Collection]: http://demo-effects.sourceforge.net/
[Hermes]: http://www.clanlib.org/hermes/
[libavg]: http://www.libavg.de/
[libsigc]: http://libsigc.sourceforge.net/
[METIS - Serial Graph Partitioning and Fill-reducing Matrix Ordering]: http://glaros.dtc.umn.edu/gkhome/metis/metis/overview
[Free 4]: http://glaros.dtc.umn.edu/gkhome/metis/metis/faq?q=metis/metis/faq#distribute
[Loki]: http://sourceforge.net/projects/loki-lib/
[Particle System API]: http://www.particlesystems.org/
[Pixel Toaster]: http://www.pixeltoaster.com/
[SPL - Simple Plugin Layer]: http://www.unitedbytes.de/go.php?site=spl