Wine is an implementation of the Windows API on top of X and Unix. It does not require Microsoft Windows, but can use native Windows DLLs if they are available. It provides both a development toolkit for porting Windows source code to Unix as well as a program loader, allowing many unmodified Windows programs to run on x86-based Unixes.
The Volleyball Manager supports the planning, management, and documentation of volleyball tournaments and leagues. An automatic scheduler generates an optimized schedule, which can be freely modified. The projector and terminal module offer more transparency for participants and visitors of tournaments.
KNOPPIX is a bootable CD with a collection of GNU/Linux software, automatic hardware detection, and support for many graphics cards, sound cards, SCSI devices, and other peripherals. It can be used as a Linux demo, educational CD, rescue system, etc. It is not necessary to install anything on a hard disk due to on-the-fly decompression.
Office Tournament is a tool for keeping track of office tournaments, such as foosball. You may enter data from the command line or from the CGI Web interface. It outputs all kinds of stats and even a nice chart if you use the Imager::Graph::Pie Perl library available from CPAN. It currently requires no database to run, but there are plans to migrate the text (flat file db) to MySQL.