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.
Koha QA Tools
This is a repository containing scripts useful for release management/qa with Koha
KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V). It consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, kvm-intel.ko or kvm-amd.ko. KVM also requires a modified QEMU although work is underway to get the required changes upstream.
Linux home directory files
Kernel for Google/LG Nexus 4 (LG-E960)
LHC Interface MTF Offline (http://svnweb.cern.ch/guest/limo/)
XForms interface for engineers to fill in LHC installation data without an Internet connection.
A straightforward binding of libsass for Python. Compile Sass/SCSS in Python with no Ruby stack at all!
LimeSurvey (previously known as PHPSurveyor) is a PHP web application that interacts with MySQL/MSSQL/Postgres to develop, publish and collect responses to surveys. There are several ways to insert data into the survey: either by a 'pretty' public screen which presents the question(s), or using a data entry screen. It includes the capacity to generate individual 'tokens' and branching and has numerous question types and basic statistics.