非常棒的java学习资源

「爱情、让人受尽委屈。」 2022-07-13 13:42 298阅读 0赞

A curated list of awesome Java frameworks, libraries and software.

## Ancients ##

*In existence since the beginning of time and which will continue being used long after the hype has waned.*

*  [Apache Ant][] \- Build process management with XML.
 *  [Apache Hadoop][] \- Storage and large-scale processing of data-sets on clusters of commodity hardware.
 *  [Apache OpenNLP][] \- Toolkit for common tasks like tokenization.
 *  [Apache Velocity][] \- Templates for HTML pages, emails or source code generation in general.
 *  [FreeMarker][] \- General templating engine without any heavyweight or opinionated dependencies.
 *  [GlassFish][] \- Application server and reference implementation for Java EE sponsored by Oracle.
 *  [GWT][] \- Toolbox which includes a Java-to-JavaScript compiler for client-side code, XML parser, API for RPC, JUnit integration, internationalization support and widgets for the GUI.
 *  [HornetQ][] \- Clear, concise, modular and made to be embedded.
 *  [Hudson][] \- Continuous integration server still in active development.
 *  [Java Modeling Language (JML)][Java Modeling Language _JML] \- Behavioral interface specification language that can be used to specify the behavior of code modules. It combines the design by contract approach of Eiffel and the model-based specification approach of the Larch family of interface specification languages, with some elements of the refinement calculus. Used by several other verification tools.
 *  [JavaCC][] \- More specific and slightly easier to learn. Has syntactic lookahead.
 *  [JavaServer Faces][] \- Oracle's open-source implementation of the JSF standard, Mojarra.
 *  [JavaServer Pages][] \- Common templating for websites with custom tag libraries.
 *  [JUnit][] \- Common testing framework.
 *  [Launch4j][] \- Wraps JARs in lightweight and native Windows executables.
 *  [Quartz][] \- Open-source job scheduler library with Apache 2.0 license.
 *  [TestNG][] \- Testing framework.
 *  [Trove][] \- Primitive collections.

## Bean Mapping ##

*Frameworks that ease bean mapping.*

*  [Dozer][] \- Mapper that copies data from one object to another, using annotations, API or XML configuration.
 *  [JMapper][] \- Using byte code manipulation for lightning fast mapping. Supporting annotations, API or XML configuration.
 *  [MapStruct][] \- Code generator which simplifies mappings between different bean types, based on a convention over configuration approach.
 *  [ModelMapper][] \- ModelMapper is an intelligent object mapping library that automatically maps objects to each other.
 *  [Orika][] \- Orika is a Java Bean mapping framework that recursively copies (among other capabilities) data from one object to another.
 *  [Selma][] \- Stupid Simple Statically Linked Mapper. Selma is an Annotation Processor Based bean mapper.

## Build ##

*Tools which handle the build cycle and dependencies of an application.*

*  [Apache Maven][] \- Declarative build and dependency management which favors convention over configuration. It might be preferable to Apache Ant which uses a rather procedural approach and can be difficult to maintain.
 *  [Bazel][] \- Build tool from Google that builds code quickly and reliably.
 *  [Gradle][] \- Incremental builds which are programmed via Groovy instead of declaring XML. Works well with Maven's dependency management.

## Bytecode Manipulation ##

*Libraries to manipulate bytecode programmatically.*

*  [ASM][] \- All purpose, low level, bytecode manipulation and analysis.
 *  [Byte Buddy][] \- Further simplifies bytecode generation with a fluent API.
 *  [Byteman][] \- Manipulate bytecode at runtime via DSL (rules) mainly for testing/troubleshooting.
 *  [cglib][] \- Bytecode generation library.
 *  [Javassist][] \- Tries to simplify the editing of bytecode.

## Caching ##

*Libraries which provide caching facilities.*

*  [Caffeine][] \- High performance, near optimal caching library.
 *  [Ehcache][] \- Distributed general purpose cache.

## Cluster Management ##

*Frameworks which can dynamically manage applications inside of a cluster.*

*  [Apache Aurora][] \- Apache Aurora is a Mesos framework for long-running services and cron jobs.
 *  [Apache Mesos][] \- Abstracts CPU, memory, storage, and other compute resources away from machines.
 *  [Singularity][] \- Singularity is a Mesos framework that makes deployment and operations easy. It supports web services, background workers, scheduled jobs, and one-off tasks.

## Code Analysis ##

*Tools that provide metrics and quality measurements.*

*  [Checkstyle][] \- Static analysis of coding conventions and standards.
 *  [Codacy][] \- Continuous static analysis, code coverage, and software metrics to automate code reviews.
 *  [Error Prone][] \- Catches common programming mistakes as compile-time errors.
 *  [FindBugs][] \- Static analysis of bytecode to find potential bugs.
 *  [Infer][] \- Tool to produce a list of potential bugs.
 *  [jQAssistant][] \- Static code analysis with Neo4J-based query language.
 *  [PMD][] \- Source code analysis for finding bad coding practices.
 *  [SonarQube][] \- Integrates other analysis components via plugins and provides an overview of the metrics over time.
 *  [Spoon][] \- Library for analyzing and transforming Java source code.

## Code Coverage ##

*Frameworks and tools that enable collection of code coverage metrics for test suites.*

*  [Clover][] \- Proprietary code coverage tool by Atlassian that relies on source-code instrumentation, instead of bytecode instrumentation.
 *  [Cobertura][] \- Relies on offline (or static) bytecode instrumentation and class loading to collect code coverage metrics; GPLv2 licensed.
 *  [JaCoCo][] \- Framework that enables collection of code coverage metrics, using both offline and runtime bytecode instrumentation; prominently used by EclEmma, the Eclipse code-coverage plugin.

## Code Generators ##

*Tools that generate patterns for repetitive code in order to reduce verbosity and error-proneness.*

*  [ADT4J][] \- JSR-269 code generator for algebraic data types.
 *  [Auto][] \- Generates factory, service, and value classes.
 *  [FreeBuilder][] \- Automatic generation of the Builder pattern.
 *  [Immutables][] \- Annotation processors to generate simple, safe and consistent value objects.
 *  [JHipster][] \- Yeoman source code generator for Spring Boot and AngularJS.
 *  [Joda-Beans][] \- Small framework that adds queryable properties to Java, enhancing JavaBeans.
 *  [Lombok][] \- Code generator which aims to reduce verbosity.

## Command-line Argument Parsers ##

*Libraries that make it easy to parse command line options, arguments, etc.*

*  [Airline][] \- Annotation-based framework for parsing Git like command line arguments.
 *  [args4j][] \- Small library to parse command like arguments similar to javac.
 *  [JCommander][] \- Command line arguments parsing framework with custom types and validation via implementing interfaces.
 *  [JOpt Simple][] \- Simple parser that uses the POSIX getopt() and GNU getopt\_long() syntaxes. Does not use annotations, uses a fluent API instead.

## Compiler-compiler ##

*Frameworks that help to create parsers, interpreters or compilers.*

*  [ANTLR][] \- Complex full-featured framework for top-down parsing.
 *  [JFlex][] \- A lexical analyzer generator.

## Configuration ##

*Libraries that provide external configuration.*

*  [config][] \- Configuration library for JVM languages.
 *  [ini4j][] \- Provides an API for handling Windows' INI files.
 *  [owner][] \- Reduces boilerplate of properties.
 *  [KAConf][] \- Annotation-based configuration system for Java and Kotlin.

## Constraint Satisfaction Problem Solver ##

*Libraries that help on implementing optimization and satisfiability problems.*

*  [Choco][] \- Off-the-shelf constraint satisfaction problem solver, which uses constraint programming techniques.
 *  [JaCoP][] \- Includes an interface for the FlatZinc language, enabling it to execute MiniZinc models.
 *  [OptaPlanner][] \- Business planning and resource scheduling optimization solver.

## Continuous Integration ##

*Tools which support continuously building, testing and releasing applications.*

*  [Bamboo][] \- Atlassian's solution with good integration of their other products. You can either apply for an open-source license or buy it.
 *  [Concourse][] \- Provides dockerized pipeline with configuration that can be saved in version control.
 *  [fabric8][] \- Integration platform for containers.
 *  [Go][] \- ThoughtWork's open-source solution.
 *  [Jenkins][] \- Provides server-based deployment services.
 *  [TeamCity][] \- JetBrain's CI solution with a free version.
 *  [Travis][] \- Hosted service often used for open-source projects.

## CSV ##

*Frameworks and libraries that simplify reading/writing CSV data.*

*  [opencsv][] \- Simple CSV parser.
 *  [Super CSV][] \- Powerful CSV parser with support for Dozer, Joda-Time and Java 8.
 *  [uniVocity-parsers][] \- One of the fastest and most feature-complete CSV. Also comes with parsers for TSV and fixed width records.

## Database ##

*Everything which simplifies interactions with the database.*

*  [Apache Hive][] \- Data warehouse infrastructure built on top of Hadoop.
 *  [Apache Phoenix][] \- High performance relational database layer over HBase for low latency applications.
 *  [Chronicle Map][] \- Efficient in-memory (opt. persisted to disk) off-heap key-value store.
 *  [eXist][] \- A NoSQL document database and application platform.
 *  [FlexyPool][] \- Brings metrics and failover strategies to the most common connection pooling solutions.
 *  [Flyway][] \- Simple database migration tool.
 *  [H2][] \- Small SQL Database notable for its in-memory functionality.
 *  [HikariCP][] \- High performance JDBC connection pool.
 *  [JDBI][] \- Convenient abstraction of JDBC.
 *  [Jedis][] \- A small client for interaction with redis, with methods for commands.
 *  [jetcd][] \- A client library for etcd.
 *  [jOOQ][] \- Generates typesafe code based on SQL schema.
 *  [Liquibase][] \- Database-independent library for tracking, managing and applying database schema changes.
 *  [MapDB][] \- Embedded database engine that provides concurrent collections backed on disk or in off-heap memory.
 *  [Presto][] \- Distributed SQL query engine for big data.
 *  [Querydsl][] \- Typesafe unified queries.
 *  [Realm][] \- Mobile database to run directly inside phones, tablets or wearables.
 *  [Redisson][] \- Allows for distributed and scalable data structures on top of a Redis server.
 *  [Speedment][] \- Database access library that utilizes the Java 8 Stream API for querying.
 *  [sql2o][] \- Thin JDBC wrapper that simplifies database access and provides simple mapping of ResultSets to POJOs.
 *  [Vibur DBCP][] \- JDBC connection pool library which offers advanced performance monitoring capabilities.

## Data structures ##

*Efficient and specific data structures.*

*  [Apache Avro][] \- Data interchange format featuring among others: dynamic typing, untagged data, absence of manually assigned IDs.
 *  [Apache Orc][] \- Fast and efficient columnar storage format for hadoop based workloads.
 *  [Apache Parquet][] \- Columnar storage format based on assembly algorithms from the Dremel paper by Google.
 *  [Apache Thrift][] \- Data interchange format that originated at Facebook.
 *  [Persistent Collection][] \- Persistent and immutable analogue of the Java Collections Framework.
 *  [Protobuf][] \- Google's data interchange format.
 *  [SBE][] \- Simple Binary Encoding, one of the fastest message formats around.
 *  [Wire][] \- Clean, lightweight protocol buffers.

## Date and Time ##

*Libraries related to handling date and time.*

*  [Almanac Converter][] \- Simple conversion between different calendar systems.
 *  [Joda-Time][] \- De facto standard date/time-library before Java 8.
 *  [ThreeTenBP][] \- Port of JSR 310 (java.time package) by the author of Joda-Time.
 *  [Time4J][] \- Advanced date and time library.

## Dependency Injection ##

*Libraries that help to realize the[Inversion of Control][] paradigm.*

*  [Apache DeltaSpike][] \- CDI extension framework.
 *  [Dagger2][] \- Compile-time injection framework without reflection.
 *  [Guice][] \- Lightweight but powerful framework that completes Dagger.
 *  [HK2][] \- Light-weight and dynamic dependency injection framework.

## Development ##

*Augmentation of the development process at a fundamental level.*

*  [AspectJ][] \- Seamless aspect-oriented programming extension.
 *  [DCEVM][] \- Modification of the JVM that allows unlimited redefinition of loaded classes at runtime.
 *  [Faux Pas][] \- Library that simplifies error handling by circumventing the issue that none of the functional interfaces in the Java Runtime is allowed by default to throw checked exceptions.
 *  [HotswapAgent][] \- Unlimited runtime class and resource redefinition.
 *  [JRebel![c][]][JRebel_c] \- Instantly reloads code and configuration changes without redeploys.
 *  [Spring Loaded][] \- Class reloading agent.

## Distributed Applications ##

*Libraries and frameworks for writing distributed and fault-tolerant applications.*

*  [Akka][] \- Toolkit and runtime for building concurrent, distributed, and fault tolerant event-driven applications.
 *  [Apache Storm][] \- Realtime computation system.
 *  [Apache ZooKeeper][] \- Coordination service with distributed configuration, synchronization, and naming registry for large distributed systems.
 *  [Atomix][] \- Fault-tolerant distributed coordination framework.
 *  [Axon Framework][] \- Framework for creating CQRS applications.
 *  [Copycat][] \- Fault-tolerant state machine replication framework.
 *  [Hazelcast][] \- Highly scalable in-memory datagrid.
 *  [Hystrix][] \- Provides latency and fault tolerance.
 *  [JGroups][] \- Toolkit for reliable messaging and creating clusters.
 *  [Orbit][] \- Virtual Actors, adding another level of abstraction to traditional actors.
 *  [Quasar][] \- Lightweight threads and actors for the JVM.

## Distributed Databases ##

*Databases in a distributed system that appear to applications as a single data source.*

*  [Apache Cassandra][] \- Column-oriented and providing high availability with no single point of failure.
 *  [Apache HBase][] \- Hadoop database for big data.
 *  [Druid][] \- Real-time and historical OLAP data store that excel at aggregation and approximation queries.
 *  [Infinispan][] \- Highly concurrent key/value datastore used for caching.
 *  [OpenTSDB][] \- Scalable and distributed time series database written on top of Apache HBase.
 *  [OrientDB][] \- Embeddable distributed database written on top of Hazelcast.

## Distribution ##

*Tools which handle the distribution of applications in native formats.*

*  [Bintray][] \- Version control for binaries which handles the publishing. Can also be used with Maven or Gradle and has a free plan for open-source software or several business plans.
 *  [Boxfuse][] \- Deployment of JVM application to AWS using the principles of Immutable Infrastructure.
 *  [Capsule][] \- Simple and powerful packaging and deployment. A fat JAR on steroids or a "Docker for Java" that supports JVM-optimized containers.
 *  [Central Repository][] \- Largest binary component repository available as a free service to the open-source community. Default used by Apache Maven and available in all other build tools.
 *  [IzPack][] \- Setup authoring tool for cross-platform deployments.
 *  [JitPack][] \- Easy to use package repository for GitHub. Builds Maven/Gradle projects on demand and publishes ready-to-use packages.
 *  [Nexus][] \- Binary management with proxy and caching capabilities.
 *  [packr][] \- Packs JARs, assets and the JVM for native distribution on Windows, Linux and Mac OS X.
 *  [really-executable-jars-maven-plugin][] \- Maven plugin for making self-executing JARs.

## Document Processing ##

*Libraries that assist with processing office document formats.*

*  [Apache POI][] \- Supports OOXML (XLSX, DOCX, PPTX) as well as OLE2 (XLS, DOC or PPT).
 *  [documents4j][] \- API for document format conversion using third-party converters such as MS Word.
 *  [docx4j][] \- Creating and manipulating Microsoft Open XML files.

## Formal Verification ##

*Formal-methods tools: proof assistants, model checking, symbolic execution etc.*

*  [CATG][] \- Concolic unit testing engine. Automatically generates unit tests using formal methods.
 *  [Checker Framework][] \- Pluggable type systems. Includes nullness types, physical units, immutability types and more.
 *  [Daikon][] \- Daikon detects likely program invariants and can generate JML specs based on those invariats.
 *  [Java Path Finder (JPF)][Java Path Finder _JPF] \- JVM formal verification tool containing a model checker and more. Created by NASA.
 *  [JMLOK 2.0][] \- Detects nonconformances between code and JML specification through the feedback-directed random tests generation, and suggests a likely cause for each nonconformance detected.
 *  [KeY][] \- The KeY System is a formal software development tool that aims to integrate design, implementation, formal specification, and formal verification of object-oriented software as seamlessly as possible. Uses JML for specification and symbolic execution for verification.
 *  [OpenJML][] \- Translates JML specifications into SMT-LIB format and passes the proof problems implied by the program to backend solvers.

## Functional Programming ##

*Libraries that facilitate functional programming.*

*  [cyclops-react][] \- Monad and stream utilities, comprehensions, pattern matching, functional extensions for all JDK collections, future streams, trampolines and much more.
 *  [derive4j][] \- Java 8 annotation processor and framework for deriving algebraic data types constructors, pattern-matching, morphisms.
 *  [Fugue][] \- Functional extensions to Guava.
 *  [Functional Java][] \- Implements numerous basic and advanced programming abstractions that assist composition-oriented development.
 *  [Javaslang][] \- Functional component library that provides persistent data types and functional control structures.
 *  [jOOλ][jOO] \- Extension to Java 8 which aims to fix gaps in lambda, providing numerous missing types and a rich set of sequential Stream API additions.
 *  [protonpack][] \- Collection of stream utilities.
 *  [StreamEx][] \- Enhancing Java 8 Streams.

## Game Development ##

*Frameworks that support the development of games.*

*  [jMonkeyEngine][] \- Game engine for modern 3D development.
 *  [libGDX][] \- All-round cross-platform, high-level framework.
 *  [LWJGL][] \- Robust framework that abstracts libraries like OpenGL/CL/AL.

## Geospatial ##

*Libraries for working with geospatial data and algorithms.*

*  [Apache SIS][] \- Library for developing geospatial applications.
 *  [Geo][] \- GeoHash utilities in Java.
 *  [Geotoolkit.org][] \- Library for developing geospatial applications. Built on top of the Apache SIS project.
 *  [GeoTools][] \- Library that provides tools for geospatial data.
 *  [GraphHopper][] \- Road routing engine. Used as Java library or standalone web service.
 *  [H2GIS][] \- A spatial extension of the H2 database.
 *  [Jgeohash][] \- Library that can assist Java developers in using the GeoHash algorithm.
 *  [Mapsforge][] \- Software for the rendering of maps based on OpenStreetMap data.
 *  [Spatial4j][] \- General purpose spatial/geospatial ASL licensed open-source Java library.

## GUI ##

*Libraries to create modern graphical user interfaces.*

*  [JavaFX][] \- The successor of Swing.
 *  [Scene Builder][] \- Visual layout tool for JavaFX applications.
 *  [SWT][] \- The Standard Widget Toolkit (SWT) is a graphical widget toolkit for use with the Java platform.

## High Performance ##

*Everything about high performance computation, from collections to specific libraries.*

*  [Agrona][] \- Data structures and utility methods that are common in high-performance applications.
 *  [Disruptor][] \- Inter-thread messaging library.
 *  [Eclipse Collections][] \- Collections framework inspired by Smalltalk.
 *  [fastutil][] \- Fast and compact type-specific collections.
 *  [HPPC][] \- Primitive collections.
 *  [JCTools][] \- Concurrency tools currently missing from the JDK.
 *  [Koloboke][] \- Hash sets and hash maps.

## Hypermedia Types ##

*Libraries that handle serialization to hypermedia types.*

*  [JSON-LD][] \- JSON-LD implementation.
 *  [Siren4J][] \- Library for the Siren specification.

## IDE ##

*Integrated development environments that try to simplify several aspects of development.*

*  [Eclipse][] \- Established, open-souce project with support for lots of plugins and languages.
 *  [IntelliJ IDEA][] \- Supports a lot of JVM languages and provides good options for Android development. The commercial edition targets the enterprise sector.
 *  [NetBeans][] \- Provides integration for several Java SE and EE features from database access to HTML5.

## Imagery ##

*Libraries that assist with the creation, evaluation or manipulation of graphical images.*

*  [Imgscalr][] \- Simple and efficient hardware-accelerated image-scaling library implemented in pure Java 2D.
 *  [Tess4J][] \- A JNA wrapper for Tesseract OCR API.
 *  [Thumbnailator][] \- Thumbnailator is a high-quality thumbnail generation library for Java.
 *  [TwelveMonkeys][] \- Collection of plugins which extend the number of supported image file formats.
 *  [ZXing][] \- Multi-format 1D/2D barcode image processing library.

## JSON ##

*Libraries for serializing and deserializing JSON to and from Java objects.*

*  [Genson][] \- Powerful and easy to use Java to JSON conversion library.
 *  [Gson][] \- Serializes objects to JSON and vice versa. Good performance with on-the-fly usage.
 *  [Jackson-datatype-money][] \- Open-source Jackson module to support JSON serialization and deserialization of JavaMoney data types.
 *  [Jackson][] \- Similar to GSON but has performance gains if you need to instantiate the library more often.
 *  [JSON-io][] \- Convert Java to JSON. Convert JSON to Java. Pretty print JSON. Java JSON serializer.
 *  [jsoniter][] \- Fast and flexible library with iterator and lazy parsing API.
 *  [LoganSquare][] \- JSON parsing and serializing library based on Jackson's streaming API. Outperforms GSON & Jackson's library.

## JSON Processing ##

*Libraries for processing data in JSON format.*

*  [fastjson][] \- Very fast processor with no additional dependencies and full data binding.
 *  [Jolt][] \- JSON to JSON transformation tool.
 *  [JsonPath][] \- Extract data from JSON using XPATH like syntax.
 *  [JsonSurfer][] \- Streaming JsonPath processor dedicated to processing big and complicated JSON data.

## JVM and JDK ##

*Current implementations of the JVM/JDK.*

*  [Avian][] \- JVM with both a JIT & AOT modes. Includes an iOS port.
 *  [JDK 9][] \- Early access releases of JDK 9.
 *  [OpenJDK][] \- Open-source implementation for Linux.
 *  [ParparVM][] \- VM with non-blocking concurrent GC for iOS.
 *  [Zulu OpenJDK 9][] \- Early access OpenJDK 9 builds for Windows, Linux, and Mac OS X.
 *  [Zulu OpenJDK][] \- OpenJDK builds for Windows, Linux, and Mac OS X through Java 8.

## Logging ##

*Libraries that log the behavior of an application.*

*  [Apache Log4j 2][] \- Complete rewrite with a powerful plugin and configuration architecture.
 *  [Graylog][] \- Open-source aggregator suited for extended role and permission management.
 *  [Kibana][] \- Analyzes and visualizes log files. Some features require payment.
 *  [Logback][] \- Robust logging library with interesting configuration options via Groovy.
 *  [Logbook][] \- Extensible, open-source library for HTTP request and response logging.
 *  [Logstash][] \- Tool for managing log files.
 *  [SLF4J][] \- Abstraction layer which is to be used with an implementation.
 *  [tinylog][] \- Lightweight logging framework with static logger class.
 *  [Tracer][] \- Call tracing and log correlation in distributed systems.

## Machine Learning ##

*Tools that provide specific statistical algorithms which allow learning from data.*

*  [Apache Flink][] \- Fast and reliable large-scale data processing engine.
 *  [Apache Mahout][] \- Scalable algorithms focused on collaborative filtering, clustering and classification.
 *  [Apache Spark][] \- Data analytics cluster computing framework.
 *  [DeepDive][] \- Creates structured information from unstructured data and integrates it into an existing database.
 *  [Deeplearning4j][] \- Distributed and multi-threaded deep learning library.
 *  [H2O][] \- Analytics engine for statistics over big data.
 *  [JSAT][] \- Algorithms for pre-processing, classification, regression, and clustering with support for multi-threaded execution.
 *  [Oryx 2][] \- A framework for building real-time large scale machine learning applications, which also includes end-to-end applications for collaborative filtering, classification, regression, and clustering.
 *  [Smile][] \- The Statistical Machine Intelligence and Learning Engine provides a set of machine learning algorithms and a visualization library.
 *  [Weka][] \- Collection of algorithms for data mining tasks ranging from pre-processing to visualization.

## Messaging ##

*Tools that help to send messages between clients in order to ensure protocol independency.*

*  [Aeron][] \- Efficient reliable unicast and multicast message transport.
 *  [Apache ActiveMQ][] \- Message broker that implements JMS and converts synchronous to asynchronous communication.
 *  [Apache Camel][] \- Glues together different transport APIs via Enterprise Integration Patterns.
 *  [Apache Kafka][] \- High-throughput distributed messaging system.
 *  [Hermes][] \- Fast and reliable message broker built on top of Kafka.
 *  [JeroMQ][] \- Implementation of ZeroMQ.
 *  [Nakadi][] \- Provides a RESTful API on top of Kafka.
 *  [RocketMQ][] \- A fast, reliable, and scalable distributed messaging platform.
 *  [Smack][] \- Cross-platform XMPP client library.

## Miscellaneous ##

*Everything else.*

*  [Codename One][] \- Cross platform solution for writing native mobile (iOS, Android, etc.)
 *  [CQEngine][] \- Ultra-fast SQL-like queries on Java collections.
 *  [Design Patterns][] \- Implementation and explanation of the most common design patterns.
 *  [Failsafe][] \- Simple failure handling with retries and circuit breakers.
 *  [J2ObjC][] \- Java to Objective-C translator for porting Android libraries to iOS.
 *  [jabba][] \- Java Version Manager inspired by nvm.
 *  [javaslang-circuitbreaker][] \- Functional fault tolerance library.
 *  [JavaX][] \- Reinventing and extending Java with a focus on simplicity.
 *  [JBake][] \- Static website generator.
 *  [Jimfs][] \- In-memory file system.
 *  [Joda-Money][] \- Basic currency and money classes and algorithms not provided by the JDK.
 *  [JPad][] \- Snippet runner.
 *  [Lanterna][] \- Easy console text GUI library similar to curses.
 *  [LightAdmin][] \- Pluggable CRUD UI library for rapid application development.
 *  [Membrane Service Proxy][] \- An open source, reverse proxy framework written in Java.
 *  [Modern Java - A Guide to Java 8][] \- Popular Java 8 guide.
 *  [Modernizer][] \- Detect uses of legacy Java APIs.
 *  [OpenRefine][] \- Tool for working with messy data: cleaning, transforming, extending it with web services and linking it to databases.
 *  [TypeTools][] \- Tools for resolving generic types.

## Microservice ##

*Tools for managing microservices, i.e. creation, coordination or discovery.*

*  [Apollo][] \- Libraries for writing composable microservices.
 *  [consul-api][] \- Client for the[Consul][] API a distributed, highly available and datacenter-aware registry/discovery service.
 *  [Eureka][] \- REST based service registry for resilient load balancing and failover.
 *  [Lagom][] \- Framework for creating microservice-based systems.
 *  [SnopEE][] \- Discovery service for Java EE microservices.

## Monitoring ##

*Tools that monitor applications in production.*

*  [AppDynamics![c][]][AppDynamics_c] \- Performance monitor.
 *  [Glowroot][] \- Open source Java APM.
 *  [JavaMelody][] \- Performance monitoring and profiling.
 *  [jmxtrans][] \- Tool to connect to multiple JVMs and to query them for their attributes via JMX. Its query language is based on JSON, which allows non-Java programmers to access the JVMs attributes. Likewise, this tool supports different output writes, including Graphite, Ganglia, StatsD, among others.
 *  [Jolokia][] \- JMX over REST.
 *  [Kamon][] \- Tool for monitoring applications running on the JVM.
 *  [Metrics][] \- Expose metrics via JMX or HTTP and can send them to a database.
 *  [New Relic![c][]][New Relic_c] \- Performance monitor.
 *  [nudge4j][] \- Remote developer console from the browser for Java 8 via bytecode injection.
 *  [OverOps![c][]][OverOps_c] \- In-Production error monitoring and debugging.
 *  [Pinpoint][] \- Open source APM tool.
 *  [Prometheus][] \- Provides a multi-dimensional data model, DSL, autonomous server nodes and much more.
 *  [SPM![c][]][SPM_c] \- Performance monitor with distributing transaction tracing for JVM apps.
 *  [Stagemonitor][] \- Open source performance monitoring and transaction tracing for JVM apps.

## Native ##

*For working with platform-specific native libraries.*

*  [JNA][] \- Work with native libraries without writing JNI. Also provides interfaces to common system libraries.
 *  [JNR][] \- Work with native libraries without writing JNI. Also provides interfaces to common system libraries. Same goals as JNA, but faster, and serves as the basis for the upcoming[Project Panama][].

## Natural Language Processing ##

*Libraries that specialize on processing text.*

*  [CoreNLP][] \- Stanford's CoreNLP provides a set of fundamental tools for tasks like tagging, named entity recognition, sentiment analysis and many more.
 *  [DKPro][] \- A collection of re-usable NLP tools for linguistic pre-processing, machine learning, lexical resources, etc.
 *  [LingPipe][] \- Toolkit for a variety of tasks ranging from POS tagging to sentiment analysis.

## Networking ##

*Libraries for network programming.*

*  [Async Http Client][] \- Asynchronous HTTP and WebSocket client library.
 *  [Comsat][] \- Integrates standard Java web-related APIs with Quasar fibers and actors.
 *  [Finagle][] \- Extensible RPC system used to construct high-concurrency servers. It implements uniform client and server APIs for several protocols, and is protocol agnostic, which simplifies the implementation of new protocols.
 *  [Grizzly][] \- NIO framework. Used as a network layer in Glassfish.
 *  [gRPC][] \- RPC framework based on protobuf and HTTP/2.
 *  [MINA][] \- Abstract event-driven async I/O API for network operations over TCP/IP and UDP/IP via Java NIO.
 *  [Netty][] \- Framework for building high performance network applications.
 *  [Nifty][] \- Implementation of Thrift clients and servers on Netty.
 *  [OkHttp][] \- HTTP+SPDY client.
 *  [Riptide][] \- Client-side response routing for Spring's RestTemplate.
 *  [Undertow][] \- Web server providing both blocking and non-blocking API’s based on NIO. Used as a network layer in WildFly.
 *  [urnlib][] \- Java library for representing, parsing and encoding URNs as in RFC 2141.

## ORM ##

*APIs which handle the persistence of objects.*

*  [Apache Cayenne][] \- Provides clean, static API for data access. Also includes GUI Modeler for working with database mappings, DB reverse engineering and generation.
 *  [Ebean][] \- Provides simple and fast data access.
 *  [EclipseLink][] \- Supports a number of persistence standards: JPA, JAXB, JCA and SDO.
 *  [Hibernate][] \- Robust and widely used with an active community.
 *  [MyBatis][] \- Couples objects with stored procedures or SQL statements.

## PaaS ##

*Java platform as a service.*

*  [AWS Elastic Beanstalk![c][]][AWS Elastic Beanstalk_c] \- AWS-based with support for Tomcat and Jetty.
 *  [AWS Lambda![c][]][AWS Lambda_c] \- Serverless computation.
 *  [Google App Engine![c][]][Google App Engine_c] \- PaaS on Google's infrastructure.
 *  [Heroku![c][]][Heroku_c] \- Abstract computing environments.
 *  [Jelastic![c][]][Jelastic_c] \- Supports Tomcat, Jetty, GlassFish, JBoss, TomEE and WildFly.
 *  [OpenShift Enterprise![c][]][OpenShift Enterprise_c] \- On premise solution.

## PDF ##

*Everything that helps with the creation of PDF files.*

*  [Apache FOP][] \- Creates PDF from XSL-FO.
 *  [Apache PDFBox][] \- Toolbox for creating and manipulating PDF.
 *  [Dynamic Jasper][] \- Abstraction layer to JasperReports.
 *  [DynamicReports][] \- Simplifies JasperReports.
 *  [flyingsaucer][] \- XML/XHTML and CSS 2.1 renderer.
 *  [iText][] \- Creates PDF files programmatically but requires a license for commercial purposes.
 *  [JasperReports][] \- Complex reporting engine.

## Performance analysis ##

*Tools for performance analysis, profiling and benchmarking.*

*  [fastThread![c][]][fastThread_c] \- Analyze and visualize thread dumps with a free cloud-based upload interface.
 *  [GCeasy![c][]][GCeasy_c] \- Tool to analyze and visualize GC logs. It provides a free cloud-based upload interface.
 *  [honest-profiler][] \- An low-overhead, bias-free sampling profiler.
 *  [jHiccup][] \- Logs and records platform JVM stalls.
 *  [JMH][] \- JMH is a Java harness for building, running, and analysing nano/micro/milli/macro benchmarks written in Java and other languages targeting the JVM.
 *  [JProfiler![c][]][JProfiler_c] \- Profiler.
 *  [LatencyUtils][] \- Utilities for latency measurement and reporting.
 *  [XRebel![c][]][XRebel_c] \- Profiler for web applications.
 *  [YourKit Java Profiler![c][]][YourKit Java Profiler_c] \- Profiler.

## Platform ##

*Frameworks that are suites of multiple libraries encompassing several categories.*

*  [CUBA Platform][] \- High level framework for development of enterprise applications with rich web interface, based on Spring, EclipseLink and Vaadin.
 *  [Spring][] \- Provides many packages ranging from dependency injection to aspect-oriented programming to security.

## Reactive libraries ##

*Libraries for developing reactive applications.*

*  [Reactive Streams][] \- Provide a standard for asynchronous stream processing with non-blocking backpressure.
 *  [Reactor][] \- Library for building reactive fast-data applications.
 *  [RxJava][] \- Library for composing asynchronous and event-based programs using observable sequences from the JVM.
 *  [vert.x][] \- Polyglot event-driven application framework.

## REST Frameworks ##

*Frameworks specifically for creating RESTful services.*

*  [Dropwizard][] \- Opinionated framework for setting up modern web applications with Jetty, Jackson, Jersey and Metrics.
 *  [Feign][] \- HTTP client binder inspired by Retrofit, JAXRS-2.0, and WebSocket.
 *  [Jersey][] \- JAX-RS reference implementation.
 *  [Microserver][] — A convenient extensible Microservices plugin system for Spring & Spring Boot, with over 30 plugins and growing, that supports both micro-monolith and pure microservices styles.
 *  [RAML][] \- Modeling language to generate REST APIs with contract first.
 *  [Rapidoid][] \- A simple, secure and extremely fast framework consisting of embedded HTTP server, GUI components and dependency injection.
 *  [rest.li][] \- Framework for building robust, scalable RESTful architectures using type-safe bindings and asynchronous, non-blocking IO with an end-to-end developer workflow that promotes clean practices, uniform interface design and consistent data modeling.
 *  [RESTEasy][] \- Fully certified and portable implementation of the JAX-RS specification.
 *  [RestExpress][] \- Thin wrapper on the JBoss Netty HTTP stack to provide scaling and performance.
 *  [Restlet Framework][] \- Pioneering framework with powerful routing and filtering capabilities, unified client and server API.
 *  [Retrofit][] \- Type-safe REST client.
 *  [Spark][] \- Sinatra inspired framework.
 *  [Swagger][] \- Swagger is a specification and complete framework implementation for describing, producing, consuming, and visualizing RESTful web services.

## Science ##

*Libraries for scientific computing, analysis and visualization.*

*  [DataMelt][] \- Environment for scientific computation, data analysis and data visualization.
 *  [GraphStream][] \- Library for modeling and analysis of dynamic graphs.
 *  [JGraphT][] \- Graph library that provides mathematical graph-theory objects and algorithms.
 *  [JGraphX][] \- Library for visualisation (mainly Swing) and interaction with node-edge graphs.

## Search ##

*Engines which index documents for search and analysis.*

*  [Apache Lucene][] \- High-performance, full-featured cross-platform text search engine library.
 *  [Apache Solr][] \- Enterprise search engine optimized for high volume traffic.
 *  [Elasticsearch][] \- Distributed, multitenant-capable full-text search engine with a RESTful web interface and schema-free JSON documents.

## Security ##

*Libraries that handle security, authentication, authorization or session management.*

*  [Apache Shiro][] \- Performs authentication, authorization, cryptography and session management.
 *  [Bouncy Castle][] \- All-purpose cryptographic library. JCA provider, wide range of functions from basic helpers to PGP/SMIME operations.
 *  [Cryptomator][] \- Multiplatform transparent client-side encryption of files in the cloud.
 *  [Hdiv][] \- Runtime application self-protection against OWASP Top 10 security risks such us Insecure Direct Object References, SQL injection, Cross-Site Scripting (XSS), Cross-Site Request Forgery (CSRF) and much more.
 *  [jjwt][] \- Java JWT: JSON Web Token for Java and Android.
 *  [Keycloak][] \- Integrated SSO and IDM for browser apps and RESTful web services.
 *  [Keyczar][] \- Easy to use, yet safe encryption framework with key versioning.
 *  [Nbvcxz][] \- Advanced password strength estimation.
 *  [OACC][] \- Provides permission-based authorization services.
 *  [pac4j][] \- Security engine.
 *  [PicketLink][] \- Umbrella project for security and identity management.

## Serialization ##

*Libraries that handle serialization with high efficiency.*

*  [FlatBuffers][] \- Memory efficient serialization library that can access serialized data without unpacking and parsing it.
 *  [FST][] \- JDK compatible high performance object graph serialization.
 *  [Kryo][] \- Fast and efficient object graph serialization framework.
 *  [MessagePack][] \- Efficient binary serialization format.

## Server ##

*Servers which are specifically used to deploy applications.*

*  [Apache Tomcat][] \- Robust all-round server for Servlet and JSP.
 *  [Apache TomEE][] \- Tomcat plus Java EE.
 *  [Jetty][] \- Lightweight, small server, often embedded in projects.
 *  [nanohttpd][] \- Tiny, easily embeddable HTTP server.
 *  [WebSphere Liberty][] \- Lightweight, modular server developed by IBM.
 *  [WildFly][] \- Formerly known as JBoss and developed by Red Hat with extensive Java EE support.

## Template Engine ##

*Tools which substitute expressions in a template.*

*  [Handlebars.java][] \- Logic-less and semantic Mustache templates.
 *  [Jtwig][] \- Modular, configurable and fully tested template engine.
 *  [Thymeleaf][] \- Aims to be a substitute for JSP and works for XML files in general.

## Testing ##

*Tools that test from model to the view.*

*  [Apache JMeter][] \- Functional testing and performance measurements.
 *  [Arquillian][] \- Integration and functional testing platform for Java EE containers.
 *  [AssertJ][] \- Fluent assertions that improve readability.
 *  [Awaitility][] \- DSL for synchronizing asynchronous operations.
 *  [Citrus][] \- Integration testing framework with focus on client- and serverside messaging.
 *  [ConcurrentUnit][] \- Toolkit for testing multi-threaded and asynchronous applications.
 *  [Cucumber][] \- BDD testing framework.
 *  [Cukes-REST][] \- A collection of Gherkin steps for REST-service testing using Cucumber.
 *  [Gatling][] \- Load testing tool designed for ease of use, maintainability and high performance.
 *  [GreenMail][] \- In-memory email server for integration testing. Supports SMTP, POP3 and IMAP including SSL.
 *  [Hamcrest][] \- Matchers that can be combined to create flexible expressions of intent.
 *  [J8Spec][] \- J8Spec is a library that allows tests written in Java to follow the BDD style introduced by RSpec and Jasmine.
 *  [JBehave][] \- Framework for Behavioural Driven Development.
 *  [JGiven][] \- Developer-friendly BDD testing framework compatible with JUnit and TestNG.
 *  [JMockit][] \- Mocks static, final methods and more.
 *  [junit-dataprovider][] \- A TestNG like dataprovider runner for JUnit.
 *  [JUnitParams][] \- Creation of readable and maintainable parametrised tests.
 *  [Lamdba Behave][] \- Descriptive behavioural specification framework.
 *  [Mockito][] \- Creation of test double objects in automated unit tests for the purpose of TDD or BDD.
 *  [MockServer][] \- Allows mocking of systems that are integrated with HTTP/S.
 *  [Moco][] \- Concise web services for stubs and mocks, Duke's Choice Award 2013.
 *  [PIT][] \- Fast mutation-testing framework for evaluating fault-detection abilities of existing JUnit or TestNG test-suites.
 *  [PowerMock][] \- Enables mocking of static methods, constructors, final classes and methods, private methods and removal of static initializers.
 *  [raml-tester][] \- Tests if a request/response matches a given RAML definition.
 *  [REST Assured][] \- Java DSL for easy testing for REST/HTTP services.
 *  [Selenide][] \- Concise API around Selenium to write stable and readable UI tests.
 *  [Selenium][] \- Portable software testing framework for web applications.
 *  [Spock][] \- JUnit-compatible framework featuring an expressive Groovy-derived specification language.
 *  [TestContainers][] \- Provides throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.
 *  [Truth][] \- Google's assertion and proposition framework.
 *  [WireMock][] \- Stubs and mocks web services.

## Utility ##

*Libraries which provide general utility functions.*

*  [Apache Commons][] \- Provides different general purpose functions like configuration, validation, collections, file upload or XML processing.
 *  [CRaSH][] \- Provides a shell into a JVM that's running CRaSH. Used by Spring Boot and others.
 *  [Dex][] \- Java/JavaFX tool capable of powerful ETL and data visualization.
 *  [Gephi][] \- Cross-platform for visualizing and manipulating large graph networks.
 *  [Guava][] \- Collections, caching, primitives support, concurrency libraries, common annotations, string processing, I/O, and so forth.
 *  [JADE][] \- Framework and environment for building and to debugging multi-agent systems.
 *  [JavaVerbalExpressions][] \- A library that helps to construct difficult regular expressions.
 *  [minio-java][] \- Provides simple APIs to access any Amazon S3 compatible object storage server.
 *  [Protégé][Prot_g] \- Provides an ontology editor and a framework to build knowledge-based systems.
 *  [Underscore-java][] \- Port of Underscore.js functions.

## Web Crawling ##

*Libraries that analyze the content of websites.*

*  [Apache Nutch][] \- Highly extensible, highly scalable web crawler for production environment.
 *  [Crawler4j][] \- Simple and lightweight web crawler.
 *  [JSoup][] \- Scrapes, parses, manipulates and cleans HTML.

## Web Frameworks ##

*Frameworks that handle the communication between the layers of an web application.*

*  [Apache Tapestry][] \- Component-oriented framework for creating dynamic, robust, highly scalable web applications.
 *  [Apache Wicket][] \- Component-based web application framework similar to Tapestry with a stateful GUI.
 *  [Baratine][] \- Toolkit for building distributed and reactive applications for multiple environments, either standalone or embedded.
 *  [Blade][] \- Lightweight, modular framework which aims to be elegant and simple.
 *  [Bootique][] \- Minimally opinionated framework for runnable apps.
 *  [Grails][] \- Groovy framework with the aim to provide a highly productive environment by favoring convention over configuration, no XML and support for mixins.
 *  [Jooby][] \- Scalable, fast and modular micro framework which offers multiple programming models.
 *  [Ninja][] \- Full stack web framework.
 *  [Pippo][] \- Small, highly modularized Sinatra-like framework.
 *  [Play][] \- Uses convention over configuration, hot code reloading and display of errors in the browser.
 *  [PrimeFaces][] \- JSF framework which has a free and a commercial version with support. Provides several frontend components.
 *  [Ratpack][] \- Set of libraries that facilitate fast, efficient, evolvable and well tested HTTP applications.
 *  [Spring Boot][] \- Microframework which simplifies the development of new Spring applications.
 *  [Vaadin][] \- Event-driven framework build on top of GWT. Uses server-side architecture with Ajax on the client-side.

# Resources #

## Communities ##

*Active discussions.*

*  [r/java][r_java] \- Subreddit for the Java community.
 *  [stackoverflow][] \- Question/answer platform.
 *  [vJUG][] \- Virtual Java User Group.

## Frontends ##

*Websites that provide a frontend for this list. Please note, there won't be an official website. We don't associate with a particular website and everybody is allowed to create one.*

*  [java.libhunt.com][]

## Influential Books ##

*Books that had a high impact and are still worth reading.*

*  [Effective Java (2nd Edition)][Effective Java _2nd Edition]
 *  [Java 8 in Action][]
 *  [Java Concurrency in Practice][]
 *  [Thinking in Java][]

## Podcasts ##

*Something to listen to while programming.*

*  [Java Off Heap][]
 *  [The Java Council][]
 *  [The Java Posse][] \- Discontinued as of 02/2015.

## Twitter ##

*Active accounts to follow. Descriptions from Twitter.*

*  [Adam Bien][] \- Freelancer: Author, JavaONE Rockstar Speaker, Consultant, Java Champion.
 *  [Aleksey Shipilëv][Aleksey Shipil_v] \- Performance Geek, Benchmarking Tzar, Concurrency Bug Hunter.
 *  [Antonio Goncalves][] \- Java Champion, JUG Leader, Devoxx France, Java EE 6/7, JCP, Author.
 *  [Arun Gupta][] \- Java Champion, JavaOne Rockstar, JUG Leader, Devoxx4Kids-er, VP of Developer Advocacy at Couchbase.
 *  [Brian Goetz][] \- Java Language Architect at Oracle.
 *  [Bruno Borges][] \- Product Manager/Java Jock at Oracle.
 *  [Ed Burns][] \- Consulting Member of the Technical Staff at Oracle.
 *  [Eugen Paraschiv][] \- Author of the Spring Security Course.
 *  [James Weaver][] \- Java/JavaFX/IoT developer, author and speaker.
 *  [Java EE][] \- Official Java EE Twitter account.
 *  [Java Magazine][] \- Official Java Magazine account.
 *  [Java][] \- Official Java Twitter account.
 *  [Javin Paul][] \- Well-known Java blogger.
 *  [Lukas Eder][] \- Java Champion, speaker, JUG.ch co-leader, Founder and CEO Data Geekery (jOOQ).
 *  [Mario Fusco][] \- RedHatter, JUG coordinator, frequent speaker and author.
 *  [Mark Reinhold][] \- Chief Architect, Java Platform Group, Oracle.
 *  [Markus Eisele][] \- Java EE evangelist, Red Hat.
 *  [Martijn Verburg][] \- London JUG co-leader, speaker, author, Java Champion and much more.
 *  [Martin Thompson][] \- Pasty faced performance gangster.
 *  [OpenJDK][OpenJDK 1] \- Official OpenJDK account.
 *  [Peter Lawrey][] \- Peter Lawrey, Java performance expert.
 *  [Reza Rahman][] \- Java EE/GlassFish/WebLogic evangelist, author, speaker, open source hacker.
 *  [Simon Maple][] \- Java Champion, virtualJUG founder, LJC leader, RebelLabs author.
 *  [Stephen Colebourne][] \- Java Champion, speaker.
 *  [Trisha Gee][] \- Java Champion and speaker.

## Websites ##

*Sites to read.*

*  [Google Java Style][]
 *  [InfoQ][]
 *  [Java Algorithms and Clients][]
 *  [Java, SQL, and jOOQ][Java_ SQL_ and jOOQ]
 *  [Java.net][]
 *  [Javalobby][]
 *  [JavaWorld][]
 *  [JAXenter][]
 *  [RebelLabs][]
 *  [The Takipi Blog][]
 *  [TheServerSide.com][]
 *  [Vanilla Java][]
 *  [Voxxed][]

# Contributing #

Contributions are very welcome!

[Apache Ant]: http://ant.apache.org/
[Apache Hadoop]: http://hadoop.apache.org/
[Apache OpenNLP]: https://opennlp.apache.org/
[Apache Velocity]: http://velocity.apache.org/
[FreeMarker]: http://freemarker.org/
[GlassFish]: https://glassfish.java.net/
[GWT]: http://www.gwtproject.org/
[HornetQ]: http://hornetq.jboss.org/
[Hudson]: http://hudson-ci.org/
[Java Modeling Language _JML]: http://www.eecs.ucf.edu/~leavens/JML/
[JavaCC]: https://javacc.java.net/
[JavaServer Faces]: https://javaserverfaces.java.net/
[JavaServer Pages]: https://jsp.java.net/
[JUnit]: http://junit.org/
[Launch4j]: http://launch4j.sourceforge.net/
[Quartz]: https://github.com/quartz-scheduler/quartz
[TestNG]: http://testng.org/
[Trove]: http://trove.starlight-systems.com/
[Dozer]: https://github.com/DozerMapper/dozer/
[JMapper]: http://jmapper-framework.github.io/jmapper-core/
[MapStruct]: https://github.com/mapstruct/mapstruct
[ModelMapper]: https://github.com/jhalterman/modelmapper
[Orika]: https://github.com/orika-mapper/orika
[Selma]: https://github.com/xebia-france/selma
[Apache Maven]: http://maven.apache.org/
[Bazel]: http://bazel.io
[Gradle]: http://gradle.org/
[ASM]: http://asm.ow2.org/
[Byte Buddy]: http://bytebuddy.net/
[Byteman]: http://byteman.jboss.org/
[cglib]: https://github.com/cglib/cglib
[Javassist]: http://jboss-javassist.github.io/javassist/
[Caffeine]: https://github.com/ben-manes/caffeine
[Ehcache]: http://www.ehcache.org/
[Apache Aurora]: http://aurora.apache.org/
[Apache Mesos]: http://mesos.apache.org/
[Singularity]: http://getsingularity.com/
[Checkstyle]: https://github.com/checkstyle/checkstyle
[Codacy]: https://www.codacy.com
[Error Prone]: https://github.com/google/error-prone
[FindBugs]: http://findbugs.sourceforge.net/
[Infer]: http://fbinfer.com/
[jQAssistant]: http://jqassistant.org/
[PMD]: https://github.com/pmd/pmd
[SonarQube]: http://www.sonarqube.org/
[Spoon]: https://github.com/INRIA/spoon/
[Clover]: https://www.atlassian.com/software/clover/overview
[Cobertura]: http://cobertura.github.io/cobertura/
[JaCoCo]: http://eclemma.org/jacoco/
[ADT4J]: https://github.com/sviperll/adt4j
[Auto]: https://github.com/google/auto
[FreeBuilder]: https://github.com/google/FreeBuilder
[Immutables]: http://immutables.github.io/
[JHipster]: https://github.com/jhipster/generator-jhipster
[Joda-Beans]: http://www.joda.org/joda-beans/
[Lombok]: https://projectlombok.org/
[Airline]: https://github.com/airlift/airline
[args4j]: http://args4j.kohsuke.org/
[JCommander]: http://jcommander.org/
[JOpt Simple]: http://pholser.github.io/jopt-simple/
[ANTLR]: http://www.antlr.org/
[JFlex]: http://jflex.de/
[config]: https://github.com/typesafehub/config
[ini4j]: http://ini4j.sourceforge.net/
[owner]: https://github.com/lviggiano/owner
[KAConf]: https://github.com/mariomac/kaconf
[Choco]: http://choco-solver.org/
[JaCoP]: https://github.com/radsz/jacop/
[OptaPlanner]: http://www.optaplanner.org/
[Bamboo]: https://www.atlassian.com/software/bamboo
[Concourse]: https://concourse.ci/
[fabric8]: http://fabric8.io/
[Go]: https://www.thoughtworks.com/go/
[Jenkins]: http://jenkins-ci.org/
[TeamCity]: http://www.jetbrains.com/teamcity/
[Travis]: https://travis-ci.org
[opencsv]: http://opencsv.sourceforge.net
[Super CSV]: http://super-csv.github.io/super-csv/
[uniVocity-parsers]: https://github.com/uniVocity/univocity-parsers
[Apache Hive]: https://hive.apache.org/
[Apache Phoenix]: http://phoenix.apache.org/
[Chronicle Map]: https://github.com/OpenHFT/Chronicle-Map
[eXist]: https://github.com/eXist-db/exist
[FlexyPool]: https://github.com/vladmihalcea/flexy-pool
[Flyway]: https://flywaydb.org/
[H2]: http://h2database.com/
[HikariCP]: https://github.com/brettwooldridge/HikariCP
[JDBI]: http://jdbi.org/
[Jedis]: https://github.com/xetorthio/jedis
[jetcd]: https://github.com/justinsb/jetcd
[jOOQ]: http://www.jooq.org/
[Liquibase]: http://www.liquibase.org/
[MapDB]: http://www.mapdb.org/
[Presto]: https://github.com/prestodb/presto
[Querydsl]: http://www.querydsl.com/
[Realm]: https://github.com/realm/realm-java
[Redisson]: https://github.com/mrniko/redisson
[Speedment]: https://github.com/speedment/speedment
[sql2o]: http://sql2o.org/
[Vibur DBCP]: http://www.vibur.org/
[Apache Avro]: https://avro.apache.org/
[Apache Orc]: https://orc.apache.org/
[Apache Parquet]: http://parquet.apache.org/
[Apache Thrift]: https://thrift.apache.org/
[Persistent Collection]: http://pcollections.org/
[Protobuf]: https://github.com/google/protobuf
[SBE]: https://github.com/real-logic/simple-binary-encoding
[Wire]: https://github.com/square/wire
[Almanac Converter]: https://github.com/hypotemoose/almanac-converter
[Joda-Time]: http://www.joda.org/joda-time/
[ThreeTenBP]: https://github.com/ThreeTen/threetenbp
[Time4J]: https://github.com/MenoData/Time4J
[Inversion of Control]: https://en.wikipedia.org/wiki/Inversion_of_control
[Apache DeltaSpike]: https://deltaspike.apache.org/
[Dagger2]: http://google.github.io/dagger/
[Guice]: https://github.com/google/guice
[HK2]: https://hk2.java.net
[AspectJ]: https://eclipse.org/aspectj/
[DCEVM]: http://dcevm.github.io/
[Faux Pas]: https://github.com/zalando/faux-pas
[HotswapAgent]: https://github.com/HotswapProjects/HotswapAgent
[c]: /images/20220713/e503b0d232a841b1912105783dc8bce8.png
[JRebel_c]: http://zeroturnaround.com/software/jrebel/
[Spring Loaded]: https://github.com/spring-projects/spring-loaded
[Akka]: http://akka.io
[Apache Storm]: http://storm.apache.org/
[Apache ZooKeeper]: http://zookeeper.apache.org/
[Atomix]: http://atomix.io/atomix/
[Axon Framework]: http://www.axonframework.org/
[Copycat]: http://atomix.io/copycat/
[Hazelcast]: http://hazelcast.org/
[Hystrix]: https://github.com/Netflix/Hystrix
[JGroups]: http://www.jgroups.org/
[Orbit]: http://www.orbit.cloud/
[Quasar]: http://www.paralleluniverse.co/quasar/
[Apache Cassandra]: http://cassandra.apache.org
[Apache HBase]: http://hbase.apache.org
[Druid]: http://druid.io
[Infinispan]: http://infinispan.org/
[OpenTSDB]: http://opentsdb.net
[OrientDB]: https://orientdb.com/orientdb/
[Bintray]: https://bintray.com/
[Boxfuse]: https://boxfuse.com
[Capsule]: http://www.capsule.io/
[Central Repository]: http://search.maven.org/
[IzPack]: http://izpack.org/
[JitPack]: https://jitpack.io/
[Nexus]: http://www.sonatype.com/nexus/solution-overview
[packr]: https://github.com/libgdx/packr/
[really-executable-jars-maven-plugin]: https://github.com/brianm/really-executable-jars-maven-plugin
[Apache POI]: http://poi.apache.org/
[documents4j]: http://documents4j.com
[docx4j]: http://www.docx4java.org/trac/docx4j
[CATG]: https://github.com/ksen007/janala2
[Checker Framework]: http://types.cs.washington.edu/checker-framework/
[Daikon]: http://plse.cs.washington.edu/daikon/
[Java Path Finder _JPF]: http://babelfish.arc.nasa.gov/trac/jpf
[JMLOK 2.0]: http://massoni.computacao.ufcg.edu.br/home/jmlok
[KeY]: http://key-project.org/
[OpenJML]: http://openjml.github.io/
[cyclops-react]: https://github.com/aol/cyclops-react
[derive4j]: https://github.com/derive4j/derive4j
[Fugue]: https://bitbucket.org/atlassian/fugue
[Functional Java]: http://www.functionaljava.org
[Javaslang]: http://www.javaslang.io/
[jOO]: https://github.com/jOOQ/jOOL
[protonpack]: https://github.com/poetix/protonpack
[StreamEx]: https://github.com/amaembo/streamex
[jMonkeyEngine]: https://jmonkeyengine.org/
[libGDX]: https://libgdx.badlogicgames.com/
[LWJGL]: https://www.lwjgl.org/
[Apache SIS]: http://sis.apache.org/
[Geo]: https://github.com/davidmoten/geo/
[Geotoolkit.org]: http://www.geotoolkit.org/
[GeoTools]: http://geotools.org/
[GraphHopper]: https://github.com/graphhopper/graphhopper
[H2GIS]: http://www.h2gis.org/
[Jgeohash]: http://astrapi69.github.io/jgeohash/
[Mapsforge]: https://github.com/mapsforge/mapsforge/
[Spatial4j]: https://github.com/locationtech/spatial4j/
[JavaFX]: http://www.oracle.com/technetwork/java/javase/overview/javafx-overview-2158620.html
[Scene Builder]: http://gluonhq.com/open-source/scene-builder/
[SWT]: http://www.eclipse.org/swt/
[Agrona]: https://github.com/real-logic/Agrona
[Disruptor]: http://lmax-exchange.github.io/disruptor/
[Eclipse Collections]: https://github.com/eclipse/eclipse-collections
[fastutil]: http://fastutil.di.unimi.it/
[HPPC]: http://labs.carrotsearch.com/hppc.html
[JCTools]: https://github.com/JCTools/JCTools
[Koloboke]: https://github.com/OpenHFT/Koloboke
[JSON-LD]: https://github.com/jsonld-java/jsonld-java
[Siren4J]: https://github.com/eserating/siren4j
[Eclipse]: http://www.eclipse.org/
[IntelliJ IDEA]: http://www.jetbrains.com/idea/
[NetBeans]: https://netbeans.org/
[Imgscalr]: https://github.com/thebuzzmedia/imgscalr
[Tess4J]: https://github.com/nguyenq/tess4j
[Thumbnailator]: https://github.com/coobird/thumbnailator
[TwelveMonkeys]: https://github.com/haraldk/TwelveMonkeys
[ZXing]: https://github.com/zxing/zxing
[Genson]: http://owlike.github.io/genson/
[Gson]: https://github.com/google/gson
[Jackson-datatype-money]: https://github.com/zalando/jackson-datatype-money
[Jackson]: http://wiki.fasterxml.com/JacksonHome
[JSON-io]: https://github.com/jdereg/json-io
[jsoniter]: http://jsoniter.com
[LoganSquare]: https://github.com/bluelinelabs/LoganSquare
[fastjson]: https://github.com/alibaba/fastjson
[Jolt]: https://github.com/bazaarvoice/jolt
[JsonPath]: https://github.com/jayway/JsonPath
[JsonSurfer]: https://github.com/jsurfer/JsonSurfer
[Avian]: https://github.com/ReadyTalk/avian
[JDK 9]: https://jdk9.java.net/
[OpenJDK]: http://openjdk.java.net/
[ParparVM]: https://github.com/codenameone/CodenameOne/tree/master/vm
[Zulu OpenJDK 9]: http://zulu.org/zulu-9-pre-release-downloads/
[Zulu OpenJDK]: http://www.azul.com/downloads/zulu/
[Apache Log4j 2]: http://logging.apache.org/log4j/
[Graylog]: https://www.graylog.org/
[Kibana]: https://www.elastic.co/products/kibana
[Logback]: http://logback.qos.ch/
[Logbook]: https://github.com/zalando/logbook
[Logstash]: https://www.elastic.co/products/logstash
[SLF4J]: http://www.slf4j.org/
[tinylog]: http://www.tinylog.org/
[Tracer]: https://github.com/zalando/tracer
[Apache Flink]: https://flink.apache.org/
[Apache Mahout]: https://mahout.apache.org/
[Apache Spark]: http://spark.apache.org/
[DeepDive]: http://deepdive.stanford.edu
[Deeplearning4j]: http://deeplearning4j.org/
[H2O]: http://www.h2o.ai/
[JSAT]: https://github.com/EdwardRaff/JSAT
[Oryx 2]: https://github.com/OryxProject/oryx
[Smile]: http://haifengl.github.io/smile/
[Weka]: http://www.cs.waikato.ac.nz/ml/weka/
[Aeron]: https://github.com/real-logic/Aeron
[Apache ActiveMQ]: http://activemq.apache.org/
[Apache Camel]: http://camel.apache.org/
[Apache Kafka]: http://kafka.apache.org/
[Hermes]: http://hermes.allegro.tech
[JeroMQ]: https://github.com/zeromq/jeromq
[Nakadi]: https://github.com/zalando/nakadi
[RocketMQ]: https://github.com/alibaba/RocketMQ
[Smack]: https://github.com/igniterealtime/Smack/
[Codename One]: https://www.codenameone.com/
[CQEngine]: https://github.com/npgall/cqengine
[Design Patterns]: https://github.com/iluwatar/java-design-patterns
[Failsafe]: https://github.com/jhalterman/failsafe
[J2ObjC]: https://github.com/google/j2objc
[jabba]: https://github.com/shyiko/jabba
[javaslang-circuitbreaker]: https://github.com/javaslang/javaslang-circuitbreaker
[JavaX]: http://javax.ai1.lol/
[JBake]: http://jbake.org
[Jimfs]: https://github.com/google/jimfs
[Joda-Money]: http://www.joda.org/joda-money/
[JPad]: http://jpad.io/
[Lanterna]: https://github.com/mabe02/lanterna
[LightAdmin]: http://lightadmin.org/
[Membrane Service Proxy]: https://github.com/membrane/service-proxy
[Modern Java - A Guide to Java 8]: https://github.com/winterbe/java8-tutorial
[Modernizer]: https://github.com/andrewgaul/modernizer-maven-plugin
[OpenRefine]: http://openrefine.org/
[TypeTools]: https://github.com/jhalterman/typetools
[Apollo]: https://spotify.github.io/apollo/
[consul-api]: https://github.com/Ecwid/consul-api
[Consul]: https://www.consul.io/
[Eureka]: https://github.com/Netflix/eureka
[Lagom]: https://www.lightbend.com/lagom
[SnopEE]: https://github.com/ivargrimstad/snoop
[AppDynamics_c]: https://www.appdynamics.com/
[Glowroot]: https://glowroot.org/
[JavaMelody]: https://github.com/javamelody/javamelody
[jmxtrans]: https://github.com/jmxtrans/jmxtrans/
[Jolokia]: https://jolokia.org/
[Kamon]: http://www.kamon.io/
[Metrics]: http://metrics.dropwizard.io/
[New Relic_c]: http://newrelic.com/
[nudge4j]: https://github.com/lorenzoongithub/nudge4j
[OverOps_c]: https://www.overops.com/
[Pinpoint]: https://github.com/naver/pinpoint
[Prometheus]: https://prometheus.io/
[SPM_c]: https://sematext.com/spm/
[Stagemonitor]: https://github.com/stagemonitor/stagemonitor
[JNA]: https://github.com/java-native-access/jna
[JNR]: https://github.com/jnr/jnr-ffi
[Project Panama]: http://openjdk.java.net/projects/panama/
[CoreNLP]: http://nlp.stanford.edu/software/corenlp.shtml
[DKPro]: https://dkpro.github.io/
[LingPipe]: http://alias-i.com/lingpipe/
[Async Http Client]: https://github.com/AsyncHttpClient/async-http-client
[Comsat]: https://github.com/puniverse/comsat
[Finagle]: https://github.com/twitter/finagle
[Grizzly]: https://grizzly.java.net/
[gRPC]: https://github.com/grpc/grpc-java
[MINA]: https://mina.apache.org/
[Netty]: http://netty.io/
[Nifty]: https://github.com/facebook/nifty
[OkHttp]: http://square.github.io/okhttp/
[Riptide]: https://github.com/zalando/riptide
[Undertow]: http://undertow.io/
[urnlib]: https://github.com/slub/urnlib
[Apache Cayenne]: http://cayenne.apache.org/
[Ebean]: http://ebean-orm.github.io/
[EclipseLink]: https://www.eclipse.org/eclipselink/
[Hibernate]: http://hibernate.org/orm/
[MyBatis]: http://www.mybatis.org/mybatis-3/
[AWS Elastic Beanstalk_c]: https://aws.amazon.com/elasticbeanstalk/
[AWS Lambda_c]: https://aws.amazon.com/lambda/
[Google App Engine_c]: https://cloud.google.com/
[Heroku_c]: https://www.heroku.com/
[Jelastic_c]: https://jelastic.com/
[OpenShift Enterprise_c]: https://www.openshift.com/
[Apache FOP]: http://xmlgraphics.apache.org/fop/
[Apache PDFBox]: http://pdfbox.apache.org/
[Dynamic Jasper]: http://dynamicjasper.com/
[DynamicReports]: http://dynamicreports.org/
[flyingsaucer]: https://github.com/flyingsaucerproject/flyingsaucer
[iText]: http://itextpdf.com/
[JasperReports]: http://community.jaspersoft.com/project/jasperreports-library
[fastThread_c]: http://fastthread.io
[GCeasy_c]: http://gceasy.io
[honest-profiler]: https://github.com/RichardWarburton/honest-profiler
[jHiccup]: https://github.com/giltene/jHiccup
[JMH]: http://openjdk.java.net/projects/code-tools/jmh/
[JProfiler_c]: https://www.ej-technologies.com/products/jprofiler/overview.html
[LatencyUtils]: https://github.com/LatencyUtils/LatencyUtils
[XRebel_c]: http://zeroturnaround.com/software/xrebel/
[YourKit Java Profiler_c]: https://www.yourkit.com/features/
[CUBA Platform]: https://cuba-platform.com
[Spring]: http://projects.spring.io/spring-framework/
[Reactive Streams]: https://github.com/reactive-streams/reactive-streams-jvm/
[Reactor]: http://projectreactor.io/
[RxJava]: https://github.com/ReactiveX/RxJava
[vert.x]: http://vertx.io/
[Dropwizard]: https://dropwizard.github.io/dropwizard/
[Feign]: https://github.com/Netflix/feign
[Jersey]: https://jersey.java.net/
[Microserver]: https://github.com/aol/micro-server
[RAML]: http://raml.org/
[Rapidoid]: http://www.rapidoid.org/
[rest.li]: https://github.com/linkedin/rest.li
[RESTEasy]: http://resteasy.jboss.org/
[RestExpress]: https://github.com/RestExpress/RestExpress
[Restlet Framework]: https://github.com/restlet/restlet-framework-java/
[Retrofit]: http://square.github.io/retrofit/
[Spark]: http://sparkjava.com/
[Swagger]: http://swagger.io/
[DataMelt]: http://jwork.org/dmelt/
[GraphStream]: http://graphstream-project.org/
[JGraphT]: https://github.com/jgrapht/jgrapht
[JGraphX]: https://github.com/jgraph/jgraphx
[Apache Lucene]: https://lucene.apache.org/
[Apache Solr]: http://lucene.apache.org/solr/
[Elasticsearch]: https://www.elastic.co/
[Apache Shiro]: http://shiro.apache.org/
[Bouncy Castle]: https://www.bouncycastle.org/java.html
[Cryptomator]: https://cryptomator.org/
[Hdiv]: https://github.com/hdiv/hdiv
[jjwt]: https://github.com/jwtk/jjwt
[Keycloak]: http://keycloak.jboss.org/
[Keyczar]: https://github.com/google/keyczar
[Nbvcxz]: https://github.com/GoSimpleLLC/nbvcxz
[OACC]: http://oaccframework.org/
[pac4j]: https://github.com/pac4j/pac4j
[PicketLink]: http://picketlink.org/
[FlatBuffers]: https://github.com/google/flatbuffers
[FST]: https://github.com/RuedigerMoeller/fast-serialization
[Kryo]: https://github.com/EsotericSoftware/kryo
[MessagePack]: https://github.com/msgpack/msgpack-java
[Apache Tomcat]: http://tomcat.apache.org/
[Apache TomEE]: http://tomee.apache.org/
[Jetty]: http://www.eclipse.org/jetty/
[nanohttpd]: https://github.com/NanoHttpd/nanohttpd
[WebSphere Liberty]: https://developer.ibm.com/wasdev/
[WildFly]: http://www.wildfly.org/
[Handlebars.java]: http://jknack.github.io/handlebars.java/
[Jtwig]: http://jtwig.org/
[Thymeleaf]: http://www.thymeleaf.org/
[Apache JMeter]: http://jmeter.apache.org/
[Arquillian]: http://arquillian.org/
[AssertJ]: http://joel-costigliola.github.io/assertj/
[Awaitility]: https://github.com/jayway/awaitility
[Citrus]: http://citrusframework.org/
[ConcurrentUnit]: https://github.com/jhalterman/concurrentunit
[Cucumber]: https://github.com/cucumber/cucumber-jvm
[Cukes-REST]: https://github.com/ctco/cukes-rest
[Gatling]: http://gatling.io/
[GreenMail]: http://www.icegreen.com/greenmail/
[Hamcrest]: http://hamcrest.org/JavaHamcrest/
[J8Spec]: https://github.com/j8spec/j8spec/
[JBehave]: http://jbehave.org/
[JGiven]: http://jgiven.org
[JMockit]: http://jmockit.org/
[junit-dataprovider]: https://github.com/TNG/junit-dataprovider
[JUnitParams]: https://pragmatists.github.io/JUnitParams/
[Lamdba Behave]: https://github.com/RichardWarburton/lambda-behave
[Mockito]: https://github.com/mockito/mockito
[MockServer]: http://www.mock-server.com/
[Moco]: https://github.com/dreamhead/moco
[PIT]: http://pitest.org
[PowerMock]: https://github.com/jayway/powermock
[raml-tester]: https://github.com/nidi3/raml-tester
[REST Assured]: https://github.com/jayway/rest-assured
[Selenide]: http://selenide.org/
[Selenium]: http://docs.seleniumhq.org/
[Spock]: http://spockframework.github.io/spock/docs/
[TestContainers]: https://github.com/testcontainers/testcontainers-java
[Truth]: https://github.com/google/truth
[WireMock]: http://wiremock.org/
[Apache Commons]: http://commons.apache.org/
[CRaSH]: http://www.crashub.org
[Dex]: https://github.com/PatMartin/Dex
[Gephi]: https://github.com/gephi/gephi/
[Guava]: https://github.com/google/guava
[JADE]: http://jade.tilab.com/
[JavaVerbalExpressions]: https://github.com/VerbalExpressions/JavaVerbalExpressions
[minio-java]: https://github.com/minio/minio-java
[Prot_g]: http://protege.stanford.edu/
[Underscore-java]: https://github.com/javadev/underscore-java
[Apache Nutch]: http://nutch.apache.org/
[Crawler4j]: https://github.com/yasserg/crawler4j
[JSoup]: http://jsoup.org/
[Apache Tapestry]: http://tapestry.apache.org/
[Apache Wicket]: http://wicket.apache.org/
[Baratine]: http://baratine.io
[Blade]: https://github.com/biezhi/blade
[Bootique]: http://bootique.io/
[Grails]: https://grails.org/
[Jooby]: http://jooby.org
[Ninja]: http://www.ninjaframework.org/
[Pippo]: http://www.pippo.ro/
[Play]: https://www.playframework.com/
[PrimeFaces]: http://primefaces.org/
[Ratpack]: https://ratpack.io/
[Spring Boot]: http://projects.spring.io/spring-boot/
[Vaadin]: https://vaadin.com/home
[r_java]: https://www.reddit.com/r/java
[stackoverflow]: http://stackoverflow.com/questions/tagged/java
[vJUG]: http://virtualjug.com/
[java.libhunt.com]: https://java.libhunt.com/
[Effective Java _2nd Edition]: http://www.amazon.com/Effective-Java-Edition-Joshua-Bloch/dp/0321356683
[Java 8 in Action]: http://www.amazon.com/Java-Action-Lambdas-functional-style-programming/dp/1617291994/
[Java Concurrency in Practice]: http://www.amazon.com/Java-Concurrency-Practice-Brian-Goetz/dp/0321349601
[Thinking in Java]: http://www.amazon.com/Thinking-Java-Edition-Bruce-Eckel/dp/0131872486
[Java Off Heap]: http://www.javaoffheap.com/
[The Java Council]: http://virtualjug.com/podcast/
[The Java Posse]: http://www.javaposse.com/
[Adam Bien]: https://twitter.com/AdamBien/
[Aleksey Shipil_v]: https://twitter.com/shipilev
[Antonio Goncalves]: https://twitter.com/agoncal/
[Arun Gupta]: https://twitter.com/arungupta/
[Brian Goetz]: https://twitter.com/BrianGoetz
[Bruno Borges]: https://twitter.com/brunoborges
[Ed Burns]: https://twitter.com/edburns
[Eugen Paraschiv]: https://twitter.com/baeldung
[James Weaver]: https://twitter.com/JavaFXpert
[Java EE]: https://twitter.com/Java_EE/
[Java Magazine]: https://twitter.com/Oraclejavamag
[Java]: https://twitter.com/java/
[Javin Paul]: https://twitter.com/javinpaul
[Lukas Eder]: https://twitter.com/lukaseder
[Mario Fusco]: https://twitter.com/mariofusco
[Mark Reinhold]: https://twitter.com/mreinhold
[Markus Eisele]: https://twitter.com/myfear
[Martijn Verburg]: https://twitter.com/karianna
[Martin Thompson]: https://twitter.com/mjpt777
[OpenJDK 1]: https://twitter.com/OpenJDK
[Peter Lawrey]: https://twitter.com/PeterLawrey
[Reza Rahman]: https://twitter.com/reza_rahman
[Simon Maple]: https://twitter.com/sjmaple
[Stephen Colebourne]: https://twitter.com/jodastephen
[Trisha Gee]: https://twitter.com/trisha_gee
[Google Java Style]: https://google.github.io/styleguide/javaguide.html
[InfoQ]: http://www.infoq.com/
[Java Algorithms and Clients]: http://algs4.cs.princeton.edu/code/
[Java_ SQL_ and jOOQ]: http://blog.jooq.org/
[Java.net]: https://community.oracle.com/community/java
[Javalobby]: https://dzone.com/java-jdk-development-tutorials-tools-news
[JavaWorld]: http://www.javaworld.com/
[JAXenter]: https://jaxenter.com/
[RebelLabs]: http://zeroturnaround.com/rebellabs/
[The Takipi Blog]: http://blog.takipi.com/
[TheServerSide.com]: http://www.theserverside.com/
[Vanilla Java]: https://vanilla-java.github.io/
[Voxxed]: https://www.voxxed.com/