For a couple of years, most of my spare time programming efforts went into my (no-longer-active) company, Oskusoft, which sold software for writing movie screenplays.
I've written and published various relatively minor programs during the years, which are listed below. They're mostly 5+ years old and unmaintained, and the code quality is frankly embarrassing in many places, but I have no reason for rewriting them.
Gfract - GTK-based fractal program.
Gothello - GTK-based othello program.
cd-console - text-mode CD player program for Linux.
ja2_rip - rips the wav files out of the game Jagged Alliance 2.
flip-level - flips Unreal Tournament levels upside down.