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.
PilferPage allows you to convert pages into HTML 3.2, HTML 4.01, XHTML 1, HTML 5, XHTML 5, XSL-FO 1.1, Flex 2, XUL 1, CSV, DocBook 5, and ODF 1.1. It's a Free Software project (GPLv3). It's not ready for production
pinpoint a simple presentation tool that hopes to avoid audience death by bullet point and instead provide presentations containing beautiful images and concise text slides.
Piwik is an open source (GPL license) web analytics software. It gives interesting reports on your website visitors, your popular pages, the search engines keywords they used, the language they speak… and so much more. Piwik aims to be an open source alternative to Google Analytics. The software is used by more than 50,000 active users, is translated in 40+ languages and is actively growing. Check it out!
Chromebook Pixel Linux Kernel - Doing my best to keep Linux running on the Chromebook Pixel
Middleware to add raygun.io webservice to a Plack based app
Plack is a Perl module and namespace that contains a set of reference server implementations, middleware and utility modules for PSGI, Perl Web Server Gateway Interface.
plot - a toy r7rs-small (WG1) scheme interpreter
Framework for Parsing and Formatting POD
PostgreSQL Database Server (http://www.postgresql.org/)
PostgreSQL is a powerful, open source relational database system. It has more than 15 years of active development and a proven architecture that has earned it a strong reputation for reliability, data integrity, and correctness. It runs on all major operating systems, including Linux, UNIX (AIX, BSD, HP-UX, SGI IRIX, Mac OS X, Solaris, Tru64), and Windows.
yet another forking process controller