OpenSwing is a components library that provides a rich set of advanced graphics components for developing desktop applications and HTTP/RMI based java applications/RIAs based on Swing front-end. It provides also adapters for Hibernate, JPA, iBatis, etc.
Facinas: Probabilistic Graphical Models is an extensive set of librairies, algorithms and tools for Probabilistic Inference and Learning and Reasoning under uncertainty. It implements all sort of Probabilistic Graphical Models using discrete and continuous distributions.
Java Wrapper for ncurses library.
Java Wrapper for ncurses library. This project aims to provide an easy interface to code ncurses console applications with java. (this project is not for public yet). It's in development.
A framework library which aims to independize we all, the delphi developers, from the different glitches of the platform, and attempts to provide code that is independent from the OS. It is based on *heavy* use of interfaces. Works on FPC (FreePascal).
melq is a library of classes very useful to speed the development of graphical user interfaces (GUI) in Java. It also contains several classes to work with databases (PostgreSQL). All classes are meant to work together bu they do not depend of each other
STBase (Softtopia Toolkit Base) is a set of multiplatform C++ libraries that extends Qt (http://qt.nokia.com/) libraries in areas like Database data persistance, Imaging, Printing, GUI, Networking and I/O device support.