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Useful Java links

This is a fork of awesome link with new structure, additional license info and github's star info for every link, with a lot of new links (all non-mobile github projects with 390 or more star) and so on. The russian version is in this place.
The "Hello Worlds examples" project is in this place.

Useful java links

• I. Development

  • 1. Common frameworks and libraries
  • 2. Web development
  • 3. GUI
  • 4. Business
  • 5. Game Development
  • 6. Useful libraries
    • Collections
    • Date and Time
    • Dependency Injection and AOP
    • Console and Command line
    • Functional Programming
    • Reactive Programming
    • Security and Authentication
    • High Performance
    • Serialization and I/O
    • Logging
    • Bean Mapping and Validation
  • 7. Imagery and Video
  • 8. Code generation and changing byte code
  • 9. Distributed Applications
  • 10. Science
  • 11. OSGI

• II. Databases, search engines, big data and machine learning

  • 1. Databases and storages - Distributed Databases
  • 2. Data structures
  • 3. Search engines
  • 4. Client and drivers for databases
  • 5. ORM
  • 6. Working with messy data
  • 7. Big data
  • 8. Machine Learning - Semantic Web and Linked Data
    - Constraint Satisfaction Problem Solver - Natural Language Processing (NLP) and Speech Recognition

• III. Network and Integration

  • 1. Servers (Web Server and Application Server))
  • 2. Networking
  • 3. Message, message broker and message queue
  • 4. Http and ssh
  • 5. Rest Frameworks
  • 6. Integration frameworks
  • 7. Web Crawling and HTML parsering
  • 8. Json
  • 9. CSV
  • 10. Integratin with API
  • 11. Bitcoin
  • 12. Clouds
  • 13. Cluster Management
  • 14. Document Processing (XLS, DOC and PDF)
  • 15. Native
  • 16. XML and SOAP
  • 17. Geospatial Service Interation
  • 18. Reverse Proxy Servers

• IV. Testing

  • 1. Testing
  • 2. Code Coverage
  • 3. Continuous Integration
  • 4. Formal Verification

• V. Tools for developing

  • 1. IDE
  • 2. Deploy, config and build
    • Build
    • Configuration
    • Distribution
  • 3. Perfomance tools
  • 4. Code Analysis
  • 5. Monitoring
  • 6. Redefinition of classes at runtime
  • 7. Documentation
  • 8. Other

• VI. Program languages and applications that were written with Java

  • 1. Program languages that were written with Java
  • 2. Other program languages tools that were written with Java
  • 3. Javascript
  • 4. Frameworks that help to create parsers, interpreters or compilers
  • 5. Opensource applications that were written with Java
  • 6. Opensource games that were written with Java

• VII. Other

  • 1. Source code examples
  • 2. Benchmark results
  • 3. Working with git and github

• VIII. Resources

  • 1. Communities
  • 2. Influential Books
  • 3. Websites

I. Development

1. Common frameworks and libraries

Up

1. Spring framework The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications -- on any kind of deployment platform. A key element of Spring is infrastructural support at the application level: Spring focuses on the "plumbing" of enterprise applications so that teams can focus on application-level business logic, without unnecessary ties to specific deployment environments. License: Apache 2 , , stackoverflow - more 100 000 questions.
2. Google Guava The Guava project contains several of Google's core libraries that we rely on in our Java-based projects: collections, caching, primitives support, concurrency libraries, common annotations, string processing, I/O, and so forth.Requires JDK 1.6 or higher (as of 12.0). License: Apache 2 , .
3. Apache Commons - Apache Commons is an Apache project focused on all aspects of reusable Java components.Commons Proper is dedicated to one principal goal: creating and maintaining reusable Java components. License: Apache 2.
4. Spring Boot — Spring Boot makes it easy to create Spring-powered, production-grade applications and services with absolute minimum fuss. It takes an opinionated view of the Spring platform so that new and existing users can quickly get to the bits they need. License: Apache 2 , .
5. Lombok Very spicy additions to the Java programming language. Project Lombok makes java a spicier language by adding 'handlers' that know how to build and compile simple, boilerplate-free, not-quite-java code. License: MIT , .
6. Puniverse Quasar Fibers, Channels and Actors for the JVM. Hello World examples. License: Eclipse Public v1.0/GNU Lesser 3, .
7. Rootbeer GPU CompilerThe Rootbeer GPU Compiler lets you use GPUs from within Java. License: MIT , .
8. Oblac Jodd Jodd is set of open-source Java micro frameworks and tools; floppy size! Jodd = tools + ioc + mvc + db + aop + tx + json + html < 1.5 Mb. License: BSD 2, .
9. Google Jimfs An in-memory file system for Java 7+. License: Apache 2 , .
10. Spring batch Spring Batch is a framework for writing offline and batch applications using Spring and Java. License: Apache 2 , .
11. Microserver — A convenient Microservices plugin system for Spring & Spring Boot, with over 30 plugins and growing, that supports both micro-monolith and pure microservices styles. License: Apache 2 , .
12. Greenrobot common General purpose utilities and hash functions for Android and Java (aka java-common). License: Apache 2 , .
13. Kilim Lightweight threads for Java, with message passing, nio, http and scheduling support. License: MIT , .
14. Apache Isis Apache Isis is a framework for rapidly developing domain-driven apps in Java. Write your business logic in entities, domain services and repositories, and the framework dynamically (at runtime) generates a representation of that domain model as a webapp or as a RESTful API. For prototyping or production. License: Apache 2.
15. Apache Zest Apache Zest is a community based effort exploring Composite Oriented Programming for domain centric application development. This includes evolved concepts from Aspect Oriented Programming, Dependency Injection and Domain Driven Design. License: Apache 2.

2. Web development

Up

Web Frameworks

1. Play Framework The Play Framework combines productivity and performance making it easy to build scalable web applications with Java and Scala. https://www.playframework.com/ . License: Apache 2 , .
2. Spark Spark - a Sinatra inspired web framework. License: Apache 2 , .
3. Blade a simple, elegant java web framework! License: Apache 2 , .
4. Atmosphere - Realtime Client Server Framework for the JVM, supporting WebSockets with Cross-Browser Fallbacks. License: CDDL1 / Apache 2 , .
5. Grails - Grails is a framework used to build web applications with the Groovy programming language. The core framework is very extensible and there are numerous plugins available that provide easy integration of add-on features. https://grails.org/ License: Apache 2 , .
6. Ninja Ninja is a full stack web framework for Java. Rock solid, fast and super productive. .http://www.ninjaframework.org. License: Apache 2 , .
7. Electronicarts Orbit — Orbit - Virtual actor framework for building distributed systems. License: BSD 3, .
8. Ratpack Ratpack is a simple, capable, toolkit for creating high performance web applications. Ratpack is built on Java and the Netty event-driven networking engine. The API is optimized for Groovy and Java 8.. https://ratpack.io/ License: Apache 2 , .
9. Vaadin — Vaadin is a Java framework for building modern web applications that look great, perform well and make you and your users happy.https://vaadin.com/ License: Apache 2 , .
10. ZK framework ZK is a highly productive Java framework for building amazing enterprise web and mobile applications. License: GNU Lesser, .
11. Apache Tapestry - A component-oriented framework for creating highly scalable web applications in Java. License: Apache 2.
12. Apache Wicket - Open Source Java web framework that powers thousands of web applications and web sites for governments, stores, universities, cities, banks, email providers, and more. License: Apache 2.
13. Google Web Toolkit - GWT is used by many products at Google, including Google AdWords and Google Wallet. It's open source, completely free, and used by thousands of enthusiastic developers around the world. License: Apache 2.
14. Pippo - It's an open source micro web framework in Java, with minimal dependencies and a quick learning curve.The goal of this project is to create a micro web framework in Java that should be easy to use and hack. Pippo can be used in small and medium applications and also in applications based on micro services architecture. License: Apache 2.
15. Spring MVC - Spring MVC web application and RESTful web service framework. License: Apache 2.
16. JavaServer Faces - JavaServer™ Faces technology simplifies building user interfaces for JavaServer applications. License: GNU 2 or CDDL 1.0
17. JavaServer Pages - This project provides a container independent implementation of JSP 2.1. License: GNU 2 or CDDL 1.0
18. Apache Cocoon Web development framework: separation of concerns, component-based. License: Apache 2.
19. Apache Struts Apache Struts is a free open-source framework for creating Java web applications. License: Apache 2.
20. Apache Sling Innovative Web framework based on JCR and OSGi. License: Apache 2.
21. Apache MyFaces The first free open source JavaServer(tm) Faces implementation. License: Apache 2.
22. Apache Pivot Apache Pivot is an open-source platform for building installable Internet applications (IIAs) [rich Internet application]. License: Apache 2.
23. Apache Turbine Turbine is a servlet based framework that allows Java developers to quickly build web applications. License: Apache 2.
24. Apache OODT Apache OODT software is component based, and offers a software architecture beyond simple science applications. License: Apache 2.
25. VRaptor VRaptor 4 delivers high productivity to your Java Web applications on top of CDI. VRaptor is an opensource MVC framework with a large developers and users community, . http://www.vraptor.org . License: Apache 2.
26. Jooby Scalable, fast and modular micro web framework for Java , . http://jooby.org/ . License: Apache 2.
27. CUBA Platform - High-level framework for developing enterprise applications with a rich web interface, based on Spring, EclipseLink and Vaadin. https://cuba-platform.com . License: Apache 2.
28. Jersey - Jersey RESTful Web Services framework is open source, production quality, framework for developing RESTful Web Services in Java that provides support for JAX-RS APIs and serves as a JAX-RS (JSR 311 & JSR 339) Reference Implementation.

Libraries for web development

1. Tobie ua-parser A multi-language port of Browserscope's user agent parser. License: Apache 2/MIT/Perl, .
2. Ghost Driver Ghost Driver is an implementation of the Remote WebDriver Wire protocol, using PhantomJS as back-end. License: BSD 2, .
3. B3log Solo - A blogging system written in Java, feel free to create your or your team own blog. License: Apache 2 , .
4. Nasher - A Spring Project with spring security support with angular admin panel. License: Apache 2 , .
5. Baasbox BaasBox is an Open Source project that aims to provide a backend for mobile and web apps. License: ?, .
6. Kolorobot Spring MVC 4 Quickstart Maven Archetype — The project is a Maven archetype for Spring MVC 4 web application. License: ?, .
7. Gargl - Record web requests as they happen and turn them into reusable code in any programming language. Gargl - Generic API Recorder and Generator Lite. Pronounced "Gargle." Automate any website. Record web requests as they happen and turn them into reusable code in any programming language. License: MIT , .
8. Liferay plugins - The liferay-plugins repository is part of the Liferay Portal project. Liferay Portal is an open source enterprise web platform for building business solutions that deliver immediate results and long-term value. License: GNU Lesser 2.1, .
9. Netflix Ribbon Ribbon is a Inter Process Communication (remote procedure calls) library with built in software load balancers. The primary usage model involves REST calls with various serialization scheme support. License: Apache 2 , .
10. Gwt bootstrap A GWT Library that provides the widgets of Bootstrap, from Twitter. License: Apache 2 , .
11. Netflix Zuul Zuul is an edge service that provides dynamic routing, monitoring, resiliency, security, and more. License: Apache 2 , .
12. PrimeFaces - PrimeUI is a pure CSS-JS library designed to work with any server side and client side technology featuring 50+ jQuery Widgets, Web Components, Premium Layouts-Themes and more. PrimeUI is an offspring project of the mighty PrimeFaces. License: Apache 2.
13. Spring Boot - Spring Boot makes it easy to create Spring-powered, production-grade applications and services with absolute minimum fuss. It takes an opinionated view of the Spring platfor