RHQ : A management platform for everything from the OS level load and network metrics through common databases to application servers and projects

RHQ is a management platform for everything from the OS level load and network metrics through common databases to application servers and projects. The system includes support for monitoring and/or managing Apache httpd, Apache Tomcat, JBoss Application Server, PostgreSQL, and other popular open source projects. It is built on the powerful RHQ plugin model that allows for the quick development of support for new projects. It supports inventory auto-discovery, rich monitoring and alerting, operational control, configuration management, content deployment, log tracking, and full history and auditing. It supports fine-grained security and rich group management.

• Licenses : GPLv2
• Operating Systems : Mac OS X, Windows, OS Independent, POSIX, AIX, HP-UX, Linux, Solaris
• Implementation : Java

DDMSence : A Java API which supports the DoD Discovery Metadata Specification (DDMS)

DDMSence (pronounced "dee-dee-em-Essence") is a Java API which supports the DoD Discovery Metadata Specification (DDMS). It can transform XML DDMS Resource records into a Java object model (using XOM and Xerces), allowing them to be manipulated or traversed within the context of a Java environment. DDMSence also performs logical validation of rules which are not coded into the DDMS schema (such as the validation of longitude/latitude values).

• Licenses : LGPL
• Operating Systems : Java 1.5
• Implementation : Java, XML, XOM, Schematron

XOM : An XML object model. It is a tree-based API for processing XML with Java that simultaneously supports streaming

XOM is an XML object model. It is a tree-based API for processing XML with Java that simultaneously supports streaming. In many use-cases, it can process arbitrarily large documents with effectively constant memory sizes. It strives for correctness, simplicity, and performance, in that order. XOM supports XSLT, Canonical XML, and XInclude.

• Licenses : LGPL

Imagero : A Java imaging library

Imagero is a Java imaging library. Supported file types include BMP, GIF, TIFF, PNG, JNG, MNG, JPEG (including CMYK and 12-bit grey), PSD, PBM, PGM, PPM, TGA, EPS, EPSI, EPSF, AI, PDF, MRW, CRW, NEF, DCR, and DNG. Imagero can read thumbnails and can read and write metadata (IPTC, EXIF, XMP, Wang Annotations, Image Resource Blocks, Image File Directrories, JPEG Markers). Accurate color conversion is done with ICC profiles. TIFF tools allow you to split and merge TIFF images, add and remove IFDs. Lossless JPEG to TIFF and TIFF to JPEG conversion can be done. Lossless JPEG operations are supported.

• Implementation : Java

JSesh : An editor for ancient Egyptian hieroglyphic texts

JSesh is an editor for ancient Egyptian hieroglyphic texts. It can export the text into picture formats, such as WMF files for easy inclusion in word processors. JSesh can also be used as a library for other projects concerning ancient Egyptian.

• Licenses : LGPL
• Operating Systems : OS Independent
• Implementation : Java

Jspresso : A new framework for easily building rich Internet applications

Jspresso is a new framework for easily building rich Internet applications. It dramatically reduces the development cycles needed to get your corporate application up and running while not sacrificing quality, robustness, and performance. It is not just another Web application framework, but offer the exact same ergonomics as desktop applications while keeping an N-tier, server-centric architecture on a Java backend. Applications can be deployed either in Adobe's Flex, Ajax WingS, Canoo ULC, or Swing and all on the same codebase without a single specific line of GUI code.

• Licenses : LGPL
• Operating Systems : OS Independent
• Implementation : Java, Flex

DAC (Dynamic Agent Computations) : A novel software framework designed for implementing multi-agent systems that describe parallel computations

DAC (Dynamic Agent Computations) is a novel software framework designed for implementing multi-agent systems that describe parallel computations. The whole system is easy to configure and extend, but also very efficient and scalable. Moreover, the technology that is used (JMS, Cajo, JMX) ensures high reliability of the framework, which can be used in a production environment.

• Licenses : LGPL, GPL
• Operating Systems : OS Independent
• Implementation : JMS, JMX, Spring Framework, RMI, CAJO, Java

Client-side GChart : A pure-GWT client-side charting solution

Client-side GChart is a pure-GWT client-side charting solution. It does not require browser plugins, external JavaScript, or server round-trips. The package supports bar, line, and pie charts, custom ticks, left and right y axes, grid-lines, annotated data points, pop-ups, click events, and more.

• Licenses : Apache 2.0
• Operating Systems : OS Independent
• Implementation : Java

OBSearch : A distributed similarity search index

OBSearch is a distributed similarity search index. It can (for example) match programs and help to detect Open Source/Libre license violations, find music that sounds like Sisters of Mercy, or match huge vectors of randomly generated integers just for fun.

• Implementation : Java

WaveMaker automates the development of Java Web applications

WaveMaker automates the development of Java Web applications. WaveMaker studio imports a DB schema, then automatically generates full Hibernate mapping and queries for CRUD operations. For each table, it creates a custom Dojo widget to implement grid and form capabilities. It generates standard Java Eclipse projects and WAR files that can run in any Java server. WaveMaker-generated apps are under the Apache license.

• Licenses : Apache 2.0
• Operating Systems : OS Independent
• Implementation : Java, JavaScript, Dojo, Acegi, hibernate, spring, JaxWS, Sun JDK

OpenGrok : A fast and usable source code search and cross reference 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, Bazaar, Git, ClearCase, Perforce, SCCS, RCS, CVS, or Subversion. In other words, it lets you grok (profoundly understand) the source.

• Licenses : CDDL
• Implementation : Java

[fleXive] CMS : A Java EE content management system based on JavaServer Faces

[fleXive] CMS is a Java EE content management system based on JavaServer Faces 1.2. It combines the power of JSF XHTML templating with that of the Java EE 5 content repository, [fleXive]. Some highlights include dynamic JSF templating (Facelets), easy integration of custom logic with EJB or JSF beans, a modular structure, Maven support, generic data structures, and WebDAV and CMIS support. It incorporates all core [fleXive] features like security, versioning, multilinguism, and scripting.

• Licenses : LGPL
• Operating Systems : OS Independent
• Implementation : Java, Groovy, JavaScript, SQL, jsf

Fast MD5 Implementation in Java is a heavily optimized implementation of the MD5 hashing algorithm written in Java

Fast MD5 Implementation in Java is a heavily optimized implementation of the MD5 hashing algorithm written in Java. It includes an optional native method for even greater speed improvements.

• Licenses : LGPL
• Operating Systems : Mac OS X, Windows,OS Independent, POSIX, Linux
• Implementation : C, Java

The Coldtags suite : A collection of custom JSP tags that provides 300+ custom JSP tags for common programming tasks faced by JSP developers

The Coldtags suite is a collection of custom JSP tags that provides 300+ custom JSP tags for common programming tasks faced by JSP developers. It also includes custom tags similar to the Web controls in the .NET framework.

• Implementation : Java

CloverETL : Java-based tool/framework for data integration and creation of data transformations

CloverETL is Java-based tool/framework for data integration and creation of data transformations. It is component based and follows the concept of transformation graphs which consist of individual nodes/components performing simple (or complex) operations on data. Any transformation can be defined as a set of interconnected nodes through which data flows. CloverETL can be used as a standalone application or be embedded into a larger project.

• Licenses : LGPL
• Operating Systems : OS Independent
• Implementation : Java

UJO Framework offers a special architecture of beans different from conventional JavaBeans

UJO Framework offers a special architecture of beans different from conventional JavaBeans. The useful features are XML persistence of an object tree, simple introspection, easy collaboration with Swing tables, and very light weight.

• Licenses : Apache 2.0
• Operating Systems : OS Independent
• Implementation :

SVNKit is a pure Java Subversion (SVN) client library. This means that users of the library (i.e. Java applications) do not have to include svn native binaries or javahl bindings to work with subversion repositories. It is not only a 100% Java replacement for javahl bindings, but also a library that provides a high level of control over subversion repository operations.
Operating Systems : OS Independent
Implementation : Java

Java SOS is a set of configurable Java servlets

Java SOS is a set of configurable Java servlets for fast site building, including Forums, Chat, and Calendar servlets, etc.

• Implementation : Java

The Big Faceless Graph Library : A Java class library for creating graphs and charts

The Big Faceless Graph Library is a Java class library for creating graphs and charts. It is backed by a full 3D engine, allowing you to create shaded 3D pie, bar, and line graphs as GIF, PDF, PNG, or other image formats. Its features include transparent backgrounds, extensible axes to graph dates, currencies, custom fonts, and spline curve fitting. It is small, fast, and easy to use.

• Implementation: Java

HBCI4Java : A Java library for the HBCI home banking interface

HBCI4Java is a Java library for the HBCI home banking interface. It supports almost all aspect of the HBCI versions 2.01, 2.1, 2.2, HBCI+ and FinTS-3.0 (with PIN/TAN support). Its API is very application-oriented, so no knowledge about HBCI is required. The HBCI client package can be used to develop applications using HBCI features. The HBCI server package can be used to develop your own HBCI servers. This may be useful for credit institutes or software developers who want to setup their own HBCI test server.

• Licenses : Other GPL
• Operating Systems : OS Independent, Windows, POSIX, Linux, Solaris
• Implementation : Java