Lunar Linux

I've been a Lunar developer since early 2006. Lunar Linux is a very simple and easy to handle source-based Linux distribution. Development is driven by about a dozen active developers and a number of contributing users.

Xfce

Xfce is one of the three major desktop environments available for the X11 architecture. It is written in C based on the GTK+ toolkit. I've been an enthusiastic Xfce developer since 2005. Today I maintain several core components and a few panel and file manager extensions. I'm also coordinating developers of the so-called goodies which consist of panel and file manager plugins as well as additional applications that are not part of the core desktop. I'm mainly working on the following components (a few screenshots are available here):

libxfce4menu
Freedesktop.org compliant menu implementation written in C using GObject. Used in Xfce starting with 4.6 even though it's not feature complete yet.
Thunar
Modern file manager for Xfce/GTK+ environments. Initially written by Benedikt Meurer. I am currently working on bugfixes and porting it to GIO/GVfs.
thunar-media-tags-plugin
A Thunar plugin for editing MP3/Vorbis tags and renaming media files according to their tags.
verve-plugin
Command line plugin for the Xfce panel.
xfce4-appfinder
Little tool to find and launch applications installed on your system. It can also be used to add applications to panel launchers. Rewritten by Jasper Huijsmans and me for Xfce 4.6 based on libxfce4menu and ThunarVFS.
xfce4-mixer
Mixer and volume panel plugin for Xfce based on GStreamer. I rewrote it for the upcoming Xfce 4.6 release.
xfce4-settings
Settings dialogs and daemons for core Xfce features.
xfce4-time-out-plugin
Plugin for taking breaks from the computer every once in a while.

Xubuntu

As of September 2008 I've been the official Xubuntu Xfce4 Liaison. This position involves supporting Xubuntu developers in questions about Xfce and helping to get bugs merged upstream.

Other

Devhelp plugin for VIM
VIM plugin for updating the Devhelp assistant or search window while the user is typing.
jptemplate
Simple yet powerful interactive template system for VIM. Initially not planned for public release, hence the stupid name.