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.
Test::BDD::Cucumber - Cucumber in Perl
Check whether Perl module files compile correctly
Te Tuhi Video Game System (http://sourceforge.net/projects/tetuhi)
Te Tuhi turns pictures of video games drawn on paper into games that you can play on the computer. It invents rules to suit the picture. The project aims to be inclusive, experimental, and modular, with one aim being a scaled down version for the OLPC.
the /tg/station branch of SS13, a byond based 2d game about how to keep a station full of insane people alive for more than 20 minutes.
ThingSpeak is an open source “Internet of Things” application and API to store and retrieve data from things using HTTP over the Internet or via a Local Area Network. With ThingSpeak, you can create sensor logging applications, location tracking applications, and a social network of things with status updates.
Ad Free and open source Track-and-Trace Android application for tracking items sent via New Zealand Post (NZPost) track-and-trace service. Note: this application uses the NZPost trace-and-trace API but is in no way affiliated with NZPost. SEO: NZPost, nzpost, new zealand, courier post, courierpost, tracking, track.