The Fedora Project only advocates the use of free software. For more information on the Fedora Project's commitment to software freedom see http://fedoraproject.org/wiki/Foundations. For a detailed summary of what software Fedora considers free see https://fedoraproject.org/wiki/Licensing. The Phoronix Test Suite (PTS) is free software that runs benchmark tests on your system. The vast majority of the tests only involve free software. However, some of the tests PTS can be called upon to run involve non-free software. To find out which tests are non-free run: phoronix-test-suite list-tests. Below is a list of known tests involving non-free software which PTS can run: ut2004-demo unigine-heaven unigine-sanctuary unigine-tropics quake4 prey lightsmark etqw etqw-demo etqw-demo-iqc doom3 phoronix-test-suite gui is not working due to missing php-gtk package.