Xibble is a crossword game for Palm handheld devices for two or more players. It is written in C and is built using the palm-tools and pilrc packages. It makes a great travel game!
Soundgrab is designed to help you slice up a big long raw audio file (by default 44.1 kHz 2 channel signed sixteen bit little endian) and save your favorite sections to other files.
Waterfall is yet another XMMS spectrum analyzer. While most analyzers only show a changing snapshot of the current sound, waterfall shows a scrolling spectrogram, a 2-d plot of frequency vs time, with energy represented by intensity. There are also options to use color to display stereo discrepancies, frequency onsets, or frequency uniformity.
Bestfit is a small program to determine which files that should be put on a CD (or other media), so that as little space as possible is wasted. It is very easy to use: you specify files on the command line, and bestfit prints the names of those that were selected. Alternatively, bestfit can execute a command for each selected file (eg. to move them to a different directory).
Vnc2swf is a screen recording tool for X-Window (X11. Vnc2swf captures the live motion of a screen through VNC protocol and converts it a Macromedia Flash(TM) movie (.swf).