Octaviz is a visualization system for Octave. It is a wrapper that makes all VTK classes accessible from within Octave using the same object-oriented syntax as in C++ or Python. It also provides high-level functions for 2D and 3D visualization. Using those functions, most common visualization tasks (3D surface plots, contour plots, meshes, etc.) can be accomplished without any knowledge about VTK.
Roadnav is an in-car navigation system capable of running on a variety of operating systems, including Linux, Windows, and Mac OS X. It can obtain a car's present location from a GPS unit, plot street maps of the area, and provide verbal turn by turn directions to any location in the USA. It uses the free TIGER/Line files from the US Census Bureau to build the maps, along with the GNIS state and topical gazetteer data from the USGS to identify locations.
distributed.net is a loosely knit group of computer users from all of the world that is taking up challenges requiring lots of computing power (most notably the RC5, DES, and OGR cracking contests). It is simple to participate in the challenges by downloading and running their client software (which uses idle CPU time to complete its tasks).
SffTools consists of SffToBmp, a little utility that converts Structured Fax Files to BMP, PBM, JPEG, or single- and multipage TIFF format, and SffView, a GUI viewer for those files. The tools should be especially useful to people who are faxing with ISDN cards because the CAPI interface of these cards generates such files. CAPI support for Linux is available for the active card AVM B1 and the passive card AVM Fritz!.
Genit is a framework that builds a static Web site, which does not require a server side programming language or database. Generated sites consist only of XHTML code (plus CSS and media). It runs from the command line, is based on XML, and is designed to be simple, readable, and minimalist.
Openglad is an SDL port of an old DOS game called Gladiator, which was developed by FSGames in the mid 90's. It is a top-down gauntlet-style RPG in which you hire team mates, go on missions, and improve your team with the spoils you reap. It can be played by up to 4 players (using split-screen), and features many classes, special abilities, and a scenario editor.