A text to Postscript filter for PostScript only printers. Kind of like yet another a2ps or enscript. here
A simple sound mixer for Linux. Runs in text mode on console or xterm command lines or in scripts. here
A simple cross assembler for the TI 32020 DSP. here
A hex file editor. special features are insert/delete bytes and large file support (up to 2 gig anyway.) Current version only does ANSI terminals and terminal emulators like xterm and the Linux console. here
Here is my version of Conway's Life cellular automata for the X window system.
Try this little routine to figure out what currently open files are preventing a umount from proceding. (ie what is blocking the unmount command - mntblk - get it? ya, I know its a sad name.) For Linux of course.
a sudoku solver
a one-time-pad file encrypter for linux.