I havn't had time to actually write this section yet, so this is totally incomplete

BPM tap toy, a tiny program to estimate the speed of a song.

Google Summer of Code 2008 - Coordination for the Debian GNU/Linux project, 2008

Google Summer of Code 2007 - Coordination for the Debian GNU/Linux project, 2007

MP3val GUI - a small user interface for the MP3 validator and repair utility “mp3val”, 2007

DBus-Inspector - a tool to introspect the DBus Message Bus for Linux Desktop developers, 2007

Kiss or Diss - Voting on Videos from YouTube, similar to Hot or Not, but with videos, 2006

Google Summer of Code 2006 - Mentor for the Debian GNU/Linux project, artificial intelligence for automatic classification of software packages, 2006

SSDDiff - semantic diff tool for XML files, 2004-2008

mReplay - sport replays on your mobile, project at Berkeley, 2005-2006

Pyroman - firewall configuration tool, 2005-2008

Debian SELinux - NSA Security Enhanced Linux integration for Debian, 2005-2008

LaySVN - a multi layer frontend to the subversion revision control system, 2005-2008

Debtags - Debian package tags, a tool to easier lookup software packages, 2003-2008

Debian GNU/Linux - free Linux distribution (software packaging, bug fixes, 1998-2008)

Galeon - Mozilla-basierter Webbrowser (Debian maintainance and patches, 2002-2005)

ISL3893 - Linux on the ISL3893 chipset based wireless access points (2003-2004)

ModLogAn - logfile analysis tool (2001-2004)

Ming Library - flash library (2001-2002)

Bürgernetz München-Land - NPO for the public and regional use of the Internet (1998-2004)