From Drupal and Moodle, right through to a Git versioning system and Perl modules on CPAN, we contribute back to over 175 community open source projects. This list is in order of the number of projects contributed to.
A client to go with my nodepp application
For code related to making ePub files
A complete packaging of Evolution Data Server for Maemo, including the addressbook, calendar, and email library (Camel).
Faker (aka fake-factory) is a Python package that generates fake data for you. Whether you need to bootstrap your database, create good-looking XML documents, fill-in your persistence to stress test it, or anonymize data taken from a production service, Faker is for you.
Run a Git command in several repositories
This script allows you to create archive that includes entire repository (including all submodules)
A bidirectional Git - Bazaar gateway
git-bzr shell (https://gitorious.org/git-tools/git-bz)
Fork of http://github.com/pieter/git-bzr … rewritten in /bin/sh