# Awesome Java

A curated list of awesome Java frameworks, libraries and software. Inspired by [awesome-python](https://github.com/vinta/awesome-python). Topics which have no libraries as of yet are located in README.tmp!

- [Awesome Java](#awesome-java)
    - [Application Server](#application-server)
    - [Build Tool](#build-tool)
    - [Code Analysis](#code-analysis)
    - [Continuous Integration](#continuous-integration)
    - [Date and Time](#date-and-time)
    - [Dependency Injection](#dependency-injection)
    - [Game Development](#game-development)
    - [IDE](#ide)
    - [Logging](#logging)
    - [Machine Learning](#machine-learning)
    - [MapReduce](#mapreduce)
    - [Messaging](#messaging)
    - [Miscellaneous](#miscellaneous)
    - [Natural Language Processing](#natural-language-processing)
    - [Permissions](#permissions)
    - [Template Engine](#template-engine)
    - [Testing](#testing)
    - [Utility](#utility)
    - [Web Crawling](#web-crawling)
    - [Web Frameworks](#web-frameworks)
    - [REST Frameworks](#rest-frameworks)
- [Resources](#resources)
    - [Twitter](#twitter)
    - [Websites](#websites)
- [Contributing](#contributing)

## Application Server

*Servers which are specifically used to deploy applications and provide extensive functionality for messaging and other Java specific features*

* [GlassFish](https://glassfish.java.net/) - Open source reference implementation for Java EE sponsored by Oracle with a limited lifetime
* [WildFly](http://www.wildfly.org/) - Formerly known as JBoss and developed by Red Hat 
* [Jetty] (http://www.eclipse.org/jetty/) - Part of the Eclipse Foundation


## Build Tool

*Tools which handle the build lifecycle of an application*

* [Apache Ant](http://ant.apache.org/) - Procedural build configuration via XML files
* [Apache Maven](http://maven.apache.org/) - Declarative lifecycle and dependency managment which favors convention over configuration
* [Gradle](http://www.gradle.org/) - Incremental build configuration which is programmed via Groovy 

## Code Analysis

*Tools that provide metrics and quality measurements about static code*

* [SonarQube](http://www.sonarqube.org/)
* [FindBugs] (http://findbugs.sourceforge.net/)

## Continuous Integration

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

* [Jenkins](http://jenkins-ci.org/)
* [Hudson] (http://hudson-ci.org/)

## Date and Time

*Libraries related to date and time.*

* [Java 8 SE: Date and Time API](http://www.oracle.com/technetwork/articles/java/jf14-date-time-2125367.html)
* [Joda-Time](http://joda-time.sourceforge.net/)

## Dependency Injection

*Libraries that help to reliaze the [Inversion Of Control](http://en.wikipedia.org/wiki/Inversion_of_control) paradigma*

* [Google Guice](http://de.wikipedia.org/wiki/Google_Guice)

## Game Development

*Frameworks that support the development of games*

* [LWJGL](http://lwjgl.org/)
* [libGDX](http://libgdx.badlogicgames.com/)

## IDE

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

* [NetBeans](https://netbeans.org/)
* [Eclipse](http://www.eclipse.org/)
* [IntelliJ](http://www.jetbrains.com/idea/)

## Logging

*Libraries that log the behavior of an application*

* [SLF4J](http://www.slf4j.org/) - An abstraction layer which is to be used with an implementation
* [Log4j](http://logging.apache.org/log4j/)
* [Logback](http://logback.qos.ch/)

## Machine Learning

*Tools that allow to learn from data via a set of specific algorithms*

* [Apache Mahout](https://mahout.apache.org/)
* [Apache Spark](http://spark.apache.org/)
* [Mallet](http://mallet.cs.umass.edu/)
* [Weka](http://www.cs.waikato.ac.nz/ml/weka/)

## MapReduce

*Libraries that provide access to the MapReduce model*

* [Apache Hadoop](http://hadoop.apache.org/)

## Messaging

*Tools that help sending messages between clients to ensure protocol independency*

* [Apache ActiveMQ](http://activemq.apache.org/)
* [JBoss HornetQ](http://hornetq.jboss.org/)

## Miscellaneous

*Everything else*

* [Lombok](http://projectlombok.org/) - Code-generator which aims to reduce the verbosity of Java

## Natural Language Processing

*Libraries that are specialized on processing text*

* [Apache OpenNLP](https://opennlp.apache.org/)
* [LingPipe](http://alias-i.com/lingpipe/)

## Permissions

*Libraries that handle role/rights with associated permissions*

* [Apache Shiro](http://shiro.apache.org/)

## Template Engine

*Tools which substitute expressions in a template*

* JSP
* [Apache Tapestry](http://tapestry.apache.org/)
* [Apache Velocity](http://velocity.apache.org/)
* [Thymeleaf](http://www.thymeleaf.org/)

## Testing

*Tools that test from object to interface level*

* [Apache JMeter](http://jmeter.apache.org/) - Functional testing and performance measurements
* [Mockito](http://code.google.com/p/mockito/)
* [Arquillian](http://arquillian.org/)
* [Selenium](http://docs.seleniumhq.org/)
* [VisualVM](http://visualvm.java.net/)
* [Eclipse Memory Analyzer Tool](http://www.eclipse.org/mat/)

## Utility

*Libraries which provide unspecific functionality, e.g. optimized datastructures*

* [Apache Commons](http://commons.apache.org/)
* [Google Guava](http://code.google.com/p/guava-libraries/)

## Web Crawling

*Libraries that analyze the content of websites*

* [Apache Nutch](http://nutch.apache.org/)
* [Crawler4j](https://code.google.com/p/crawler4j/)

## Web Frameworks

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

* [Spring](http://spring.io/)
* [Grails](https://grails.org/)
* [Vaadin](https://vaadin.com/)
* [GWT](http://www.gwtproject.org/)
* [Apache Wicket](http://wicket.apache.org/)
* [Play](http://www.playframework.com/)
* [Apache Struts](http://struts.apache.org/)
* [PrimeFaces](http://primefaces.org/)

## REST Frameworks

*Frameworks specifically for creating RESTful services*

* [Dropwizard](https://dropwizard.github.io/dropwizard/)
* [Jersey](https://jersey.java.net/)

## Twitter

*People to follow*

* [Adam Bien](https://twitter.com/AdamBien/)
* [Antonio Goncalves](https://twitter.com/agoncal/)
* [Arun Gupta](https://twitter.com/arungupta/)
* [Java](https://twitter.com/java/)
* [Java EE](https://twitter.com/Java_EE/)
* [Java.net](https://twitter.com/javanetbuzz/)
* [Joshua Bloch](https://twitter.com/joshbloch/)
* [Pete Muir](https://twitter.com/plmuir/)

## Websites

*Important websites*

* [Java.net](http://java.net/)

# Contributing

Contributions are very welcome. Just mind the general style.