Continuum is a continuous integration server for building Java based projects. It supports a wide range of projects.

GNU CLISP is an ANSI Common Lisp implementation with an interpreter, compiler, debugger, object system (CLOS, MOP), sockets, fast bignums, arbitrary precision floats, and foreign language interface which runs on most UNIXes and Win32.

Mandriva Linux is a community-based Linux distribution, suitable for a wide range of solutions: from clustering to servers, firewalls and - most commonly - desktops. Mandriva Linux has a long history of open development, especially via the "Cooker", a fluid distribution that resembles a stable release for a few weeks every six months....

Cython is an optimising static compiler for both the Python programming language and the extended Cython programming language (based on Pyrex). It makes writing C extensions for Python as easy as Python itself.

Agavi is an open-source MVC-style application framework for PHP 5 with strong support for important features such as web services, internationalization, and a heavy focus on code modularity and reusability.

(Note that the metrics that Ohloh provides regarding Agavi are incorrect, as the Ohloh system does not have a sufficient understanding of Agavi's source control repository; however, the activity it reports is correct.)...

OpenSimulator is a Second Life-compatible open source region simulator. Its companion project, OpenGridServices, provides the infrastructure for setting up a grid of simulators.

SuperTux is a side-scrolling platform game. The hero in this game is Tux the Penguin, the game's only reference to Linux. On the journey to rescue Penny, who has been kidnapped by evil Nolok, Tux faces 23 different kinds of bad guys while jumping and running through 101 beautifully-drawn levels. The soundtrack is available on last.fm and similar sites....

Handy web browsing in a Perl object,

What is jMonkeyEngine?

jMonkeyEngine is a game engine made for developers who want to create 3D games following modern technology standards. The framework is programmed entirely in Java aimed at wide accessibility and quick deployment to desktop, web, and mobile platforms....

IPTraf is a console-based network statistics utility for Linux. It gathers a variety of figures such as TCP connection packet and byte counts, interface statistics and activity indicators, TCP/UDP traffic breakdowns, and LAN station packet and byte counts....