There are some projects where I am involved in, this list probably isn’t very complete. You can find some of my stuff in my Github account.

Debian

I am a Debian Developer since 2003 and (co-)maintain several packages like Icinga, Iproute, Ferm and other stuff. I am also a Listmaster and Alioth.

GRML

I am a member of the GRML where I mostly do infrastructure things.

Debmon

Debmon is one of my projects where I (and others) do provide monitoring related packages for Debian.

Icinga

I am responsible for the Debian and Ubuntu packages of Icinga 1 and Icinga 2