Free business management software. Despite the name, this is written in Java and will run on any Java virtual machine. [Open Source, LGPL]

Java application for calculating really BIG numbers. [Open Source, GPL]

A full featured web-based spreadsheet editor written in Java. It also provides a grid component that can be used in Swing applications. [Open source, GPL]

Free Java applications, applets, and beans archive.

Cye robot controller software. [Freeware]

Cross-platform Personal Information Manager. [Open Source, BSD-like]

An anti chess game written in Java. It supports 2 player and 4 player games on the same board. [MIT License]

A Java Expert System Shell and scripting environment. [Commercial]

Allows management and monitoring of applications supporting the JMX specification, providing live graphing and customizable interfaces. [Open source, Apache License]