cwall is a program I wrote when I started rock climbing to help me keep track of which routes at indoor climbing gyms I'd climbed. I got it into a state where it was usable by me, but not polished at all, and never got around to the polishing stage as my need for such a program waned as my climbing skills increased. It was not wasted effort though, as I got to play with the Python bindings for Qt and write some fun vector-based graphics code and even play with geometry algorithms a bit.