CHIRP is a free, open-source tool for programming your amateur radio. It supports a large number of manufacturers and models, as well as provides a way to interface with multiple data sources and formats.

Kompare displays the differences between files. It can compare the contents of files or directories, as well as create, display, and merge patch files.

A clone of the classic game "Breakout". Control a paddle at the bottom of the playfield and bounce a ball against bricks at the top to destroy them.

gentoo is a two-pane file manager for the X Window System. gentoo lets the user do (almost) all of the configuration and customizing from within the program itself. If you still prefer to hand-edit configuration files, they're fairly easy to work with since they are written in an XML format.

Words is a FrameMaker-like word processing and desktop publishing application. It is capable of creating polished and professional looking documents. It can be used for desktop publishing, but also for "normal" word processing, like writing letters, reports and so on.