- ASM
- Apache APR
- Apache Axis
- Apache Batik
- Apache FOP
- Apache Logging
- Apache WSIF
- Apache XML-RPC
- C++ Sockets Library
- Castor
- CyberNeko HTML Parser
- Drools
- Enhydra DODS
- Enhydra Octopus
- GEOS
- GNU Common C++
- GSL - GNU Scientific Library
- HTMLParser
- Hibernate (user rating: 5.0).
- J4SQL
- JFreeChart
- JGraph
- JORAM
- JSON-RPC-Java
- JTS
- Jakarta BCEL
- Jakarta Commons
- Jakarta ECS
- Jakarta JCS
- Jakarta ORO
- Jakarta POI
- Jena
- Jencks
- JoSQL
- LibGC
- Lingo
- Lucene
- Messenger
- MetaClass
- NLog
- OSCache
- OSWorkflow
- OpenORB
- OpenSSL
- PHP-GTK
- PJSIP and PJMEDIA (user rating: 5.0).
- Propel
- ProxyToys
- Ptplot
- PyGTK
- QDox
- QuickServer
- Rome
- SERP
- ShiftOne
- WebKit
- XML Security
- XMLBeans
- XOM
- XStream
- Xalan Java 2
- Xalan c++
- Xerces Perl
- Xerces-C++
- Xerces2 Java Parser
- cache4j
- dbi4php
- edtFTPj
- ehcache
- iBATIS
- uitags
- wxWidgets
- x4juli
- xajax
