| bcprov | Java cryptography APIs (Bouncy Castle) | |
| beanshell | Small, free, embeddable, source level Java interpreter with object based scripting language features written in Java | |
| classpath | A free replacement for Sun's proprietary core Java class libraries. | |
| eclipse | An IDE for Java and other languages | |
| eclipse-ecj | Eclipse java bytecode compiler | |
| fop | XSL-FO implementation in Java. | |
| gobject-introspection | Introspection system for GObject-based libraries | |
| groovy | Programming language based on Java, inspired by Python, Ruby and Smalltalk | |
| icedtea-web | provides a Free Software web browser plugin running applets written in the Java programming language and an implementation of Java Web Start, originally based on the NetX project | |
| itext | Java Library for creating and manipulating PDFs on the fly | |
| jade | James Clark's DSSSL Engine | |
| junit | Automated testing framework for Java | |
| jython | An implementation of the Python language written in Java | |
| openjdk6 | Free Java environment based on OpenJDK 6.0 with IcedTea6 replacing binary plugs. | |
| php-apache | Apache SAPI for PHP | |
| proguard | free Java class file shrinker, optimizer, obfuscator, and preverifier | |
| rhino | Open-source implementation of JavaScript written entirely in Java | |
| saxon | XSLT 2.0 / XPath 2.0 / XQuery 1.0 processor for Java - the open source Home Edition | |
| sbaz | Bazaar software package manager for Scala | |
| swt | An open source widget toolkit for Java | |
| tomcat-native | The Apache Tomcat Native Library |