I’ve contributed to several open source projects, including:
I’m a committer at the following projects:
I also started several projects myself, these are the most notable ones:
Flurfunk - A simple Twitter-like social network for distributed teams.
I’ve got a bunch more at GitHub.
There’s also a plethora of projects I didn’t open source, mostly unfinished games. If I do manage to finish and release a game some day, I’m quite determined to make the code open source after a while.