Libgdx is a Java game development framework that provides a unified API that works across all supported platforms. The framework provides an environment for rapid prototyping and fast iterations. Instead of deploying to Android/iOS/Javascript after each code change, you can run and debug your game on the desktop, natively. Desktop JVM features like code hotswapping reduce your iteration times considerably.

libgdx - Desktop/Android/HTML5/iOS Java game development framework

Java based data integration framework can be used to transform/map/manipulate data in various formats (CSV,FIXLEN,XML,XBASE,COBOL,LOTUS, etc.); can be used standalone or embedded(as a library). Connects to RDBMS/JMS/SOAP/LDAP/S3/HTTP/FTP/ZIP/TAR.

CloverETL - Rapid Data Integration

Commons Math is a library of lightweight, self-contained mathematics and statistics components addressing the most common problems not available in the Java programming language. it has support for Linear Algebra, Probability Distributions, Numerical Algebra, Statistics, Transform methods, Least Square etc.

Commons Math: The Apache Commons Mathematics Library

JFrog is an universal Artifact Repository Manager on the market, JFrog Artifactory fully supports software packages created by any language or technology. As a local proxy to the outside world, Artifactory guarantees consistent access to the components needed by your build tools. Remote artifacts are cached locally for reuse, so that you don’t have to download them over and over again. Automate all aspects of artifact management using a powerful REST API.


JFrog - Artifact Repository Manager

RESTEasy is a JBoss project that provides various frameworks to help you build RESTful Web Services and RESTful Java applications. It is a portable implementation of the JAX-RS specification. JAX-RS is a JCP specification that provides a Java API for RESTful Web Services over the HTTP protocol. It is portable to Tomcat and many other app-server. It has rich set of providers for: XML, JSON, YAML, Fastinfoset, Multipart, XOP, Atom, etc.

RESTEasy - Rest Framework for Java

Solrj is the official java client to access Solr. It offers a java interface to add, update, and query the solr index. SolrJ hides a lot of the details of connecting to Solr and allows your application to interact with Solr with simple high-level methods. The SolrJ API is included with Solr, so you do not have to download or install anything else.

Solrj - Official Solr client

The Google Authenticator project includes implementations of one-time passcode generators for several mobile platforms, as well as a pluggable authentication module (PAM). One-time passcodes are generated using open standards developed by the Initiative for Open Authentication (OATH). These implementations support the HMAC-Based One-time Password (HOTP) algorithm specified in RFC 4226 and the Time-based One-time Password (TOTP) algorithm specified in RFC 6238. 

Google Authenticator - Two factor authentication

Guava is a set of core libraries that includes new collection types (such as multimap and multiset), immutable collections, a graph library, functional types, an in-memory cache, and APIs/utilities for concurrency, I/O, hashing, primitives, reflection, string processing, and much more. 
It is memory efficient. Its most interesting class is <A HREF="http://google-collections.googlecode.com/svn/trunk/javadoc/com/google/common/collect/MapMaker.html" target="_blank">MapMaker</A>, which is a ConcurrentMap builder, providing any combination of these features: soft or weak keys, soft or weak values, timed expiration, and on-demand computation of values. Check out their video in <A HREF="http://www.youtube.com/watch?v=ZeO%5FJ2OcHYM" target="_blank">Youtube</A>.

Guava is a set of core libraries that includes new collection types (such as multimap and multiset), immutable collections, a graph library, functional types, an in-memory cache, and APIs/utilities for concurrency, I/O, hashing, primitives, reflection, string processing, and much more.

Guava - Google Core Libraries for Java

Protocol buffers are a language-neutral, platform-neutral extensible mechanism for serializing structured data. You define how you want your data to be structured once, then you can use special generated source code to easily write and read your structured data to and from a variety of data streams and using a variety of languages. 

Protocol Buffers - Google's data interchange format

docx4j is a library which helps you to work with the Office OpenXML file format as used in docx documents, pptx presentations, and xlsx spreadsheets.
 
It supports: 
<ul>
<li>Open existing docx/pptx/xlsx</li>
<li>Create new docx/pptx/xlsx</li>
<li>Programmatically manipulate docx/pptx/xlsx (anything the file format allows)</li>
<li>CustomXML binding (with support for pictures, rich text, checkboxes, and OpenDoPE extensions for repeats &amp; conditionals, and importing XHTML)</li>
<li>Export as HTML</li>
<li>Export as PDF (using Plutext's PDF Converter, or use docx4j-export-FO project)</li>
<li>Produce/consume Word 2007's xmlPackage (pkg) format</li>
<li>Apply transforms, including common filters</li>
<li>Font support (font substitution, and use of any fonts embedded in the document)</li>
</ul>

docx4j is a library which helps you to work with the Office OpenXML file format as used in docx documents, pptx presentations, and xlsx spreadsheets.

docx4j - JAXB-based Java library for Word docx, Powerpoint pptx, and Excel xlsx files

Alibaba JStorm is an enterprise fast and stable streaming process engine. It runs program up to 4x faster than Apache Storm. It is easy to switch from record mode to mini-batch mode. It is not only a streaming process engine. It means one solution for real time requirement, whole realtime ecosystem.


jstorm - Enterprise Stream Process Engine

OpenGrok is a fast and usable source code search and cross reference engine. It helps you search, cross-reference and navigate your source tree. It can understand various program file formats and version control histories like Mercurial, Git, SCCS, RCS, CVS, Subversion, Teamware, ClearCase, Perforce, Monotone and Bazaar.

OpenGrok -  A wicked fast source browser

OpenKeychain is an OpenPGP implementation for Android. 

OpenKeychain - OpenPGP implementation for Android

A lightweight wrapper around SQLiteOpenHelper and ContentResolver which introduces reactive stream semantics to queries. SQL Brite's only responsibility is to be a mechanism for coordinating and composing the notification of updates to tables such that you can update queries as soon as data changes. This library is not an ORM. It is not a type-safe query mechanism. It won't serialize the same POJOs you use for Gson. It's not going to perform database migrations for you.

Sqlbrite - A lightweight wrapper around SQLiteOpenHelper which introduces reactive stream semantics to SQL operations

Red5 is an Open Source Flash Server written in Java that supports Streaming Video (FLV, F4V, MP4, 3GP), Streaming Audio (MP3, F4A, M4A, AAC),    Recording Client Streams (FLV and AVC+AAC in FLV container), Shared Objects, Live Stream Publishing, 
Remoting Protocols: RTMP, RTMPT, RTMPS, and RTMPE.
 

Red5 - Media Server

Discover open source projects across all platforms

Projects