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.
longtem 2.6.34 linux kernel
vCard 3 validator, class and utility functions
vim-snipmate default snippets (Previously snipmate-snippets)
Wheelbarrow is a command line tool for building Debian packages containing python wheels and a requirements.txt file, when installed a virtualenv is created with all requirements installed.
THis is just a simple tool to help me run my tox dht bootstrap node. It was also a good chance to play around with docopt
wkhtmltopdf and wkhtmltoimage are command line tools to render HTML into PDF and various image formats using the QT Webkit rendering engine. These run entirely "headless" and do not require a display or display service.