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.
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
A gem that processes Trello cards from Git post-receive hook
This website intends to display koha community usage statistics. Data are collected from installed koha if librarian wants anonymously or not. External references http://wiki.koha-community.org/w/index.php?title=KohaUsageStat_RFC https://github.com/jajm/hea-ws
Hessian web-service protocol for Perl
iRATE radio (http://irate.sourceforge.net)
iRATE radio provides users with a powerful new way to find and download free, legal music online. Users rate tracks based on their tastes. The iRATE server then selects other tracks to send to the user from a database of over 50,000 freely downloadable songs by correlating the user's ratings with other users', and finding people with similar tastes. Unlike streaming audio, iRATE saves the tracks to the user's hard drive. This means that playback is smoother, without the typical problems associated with streaming media, such as high bandwidth usage.