What is Open Source Software Free and open source software, also F/OSS, FOSS, or FLOSS (for Free/Libre/Open Source Software) is software which is liberally licensed to grant the right of users to study, change, and improve its design through the availability of its source code. This approach has gained both momentum and acceptance as the potential benefits have been increasingly recognized by both individuals and corporate players. 'F/OSS' is an inclusive term generally synonymous with both free software and open source software which describe similar development models, but with differing « Continue »