This is a list of notable software packages which were published under a proprietary software license but later released as free and open-source software, or into the public domain. In some cases, the company continues to publish proprietary releases alongside the non-proprietary version. See also History of free and open-source software List of commercial video games with available source code List of free and open-source software packages List of free and open-source web applications List of proprietary source-available software List of formerly free and open-source software References Formerly proprietary software