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.
git-bzr shell (https://gitorious.org/git-tools/git-bz)
Fork of http://github.com/pieter/git-bzr … rewritten in /bin/sh
GitHub's jsPDF (http://github.com/MrRio/jsPDF)
GitStats is a statistics generator for git repositories. It examines the repository and produces some interesting statistics from the history. Currently it outputs only HTML.
A gem that processes Trello cards from Git post-receive hook
Gource is a software version control visualization tool.
SilverStripe 3 GridField Components set for bulk image upload and bulk record edit, unlink & delete
Gallery view styling and functionalities of SS3 GridField
GStreamer SDK (http://www.gstreamer.com/)
Facilitates the use of GStreamer by providing an stable version of the framework, sample code and documentation. The GStreamer SDK is a joint project between Collabora and Fluendo