The Interreality project is a collection of Open Source, Free Software projects based on the Virtual Object System (VOS) platform. The goal is to develop a free and open platform for multi-user 3D virtual reality games, applications, and interactive, collaborative 3D virtual spaces. VOS is a powerful and generic network object framework designed to support a variety of high-performance applications. It is the basis for Ter'Angreal, a general-purpose browser application for entering and participating in 3D worlds.
Crocsdb is a frontend to Jade and a variety of utilities that allows the EASY creation of multiple document formats (html, pdf, etc.) from a single SGML source. All you need to do is give the script one argument - the name of your SGML file. Links and documentation for the installation of DocBook and related utilities are included.
DFBKana is a small DirectFB program to help you learn Japanese kana (hiragana and katakana). You will be presented a kana character and you have to guess the pronounciation by selecting the apropriate romanji field in the romanji grid window. There are also some other guess modes (show hiragana, guess katakana and vice versa). The program uses nice colors to visualize which characters you know well and which you don't.
GrypPhon focuses on adding new features to the old concept of a CD player, while maintaining extreme configurability. It is written purely in Python and contains a Linux CD-ROM audio library for Python containing all normal CD-playing features, plus volume control and skipping/searching.
Mondo is a very simplistic health monitoring daemon that relies on lm_sensors. It is capable of monitoring whatever settings you're willing to assign a label to in your sensors.conf file. It provides the same function as Motherboard Monitor, except it lacks a GUI interface and is specific to Linux.