irrlamb is a 3D game that probably involves a lot of physics and frustrating gameplay. (C++) [Linux, Windows] [GPL2]

An open source library for building J2ME applications. It includes an UI, a logging framework, functions for getting location data from a Bluetooth GPS device, and utility classes.

Google code project offering utilities and add-ons for JavaFX Script.

Standalone JavaScript development environment; goal: turn JavaScript into a general-purpose scripting language. Has set of native modules that contain many general-purpose classes and functions. Open source, GPL.

MIDI and audio sequencer, synthesizers and FX, and a soundfont sampler and wave editor. Site includes project info, downloads, and a link to the main developer. (Delphi) [Windows]

Offers a console implementation of the version control system for windows.

Project page for Ochan, the java anonymouse imageboard application. (Java)

A simple and lightweight C++ network sockets wrapper for Windows and Linux which is designed for games.

TiCPP is short for the official name TinyXML++. It is a completely new interface to TinyXML that uses many of the C++ strengths: Templates, exceptions, and much better error handling. [Open Source, MIT]

Portable Linux distribution that boots from 2-3 floppies (or a FAT 16 partition) and runs entirely in RAM. Contains latest versions of popular network security tools. Useful for mapping and monitoring TCP/IP networks.