openQA is an automated test tool for operating systems and the engine at the heart of openSUSE's automated testing initiative.
Fedora QA has recently deployed an openQA instance which we are using to test Fedora composes.
Beaker is a system for test automation and lab management maintained by Red Hat and used heavily to test RHEL.
Fedora's Beaker Instance has several clients and is available for all Fedora contributors
Taskotron is a system made up of several components which are written and maintained by Fedora QA.
The core of Taskotron is the libtaskotron which runs the actual tasks.