Category:Free windowing systems
{{Commons category|Free windowing systems}}
{{Portal|Free and open-source software}}
This is a category of articles relating to software which can be freely used, copied, studied, modified, and redistributed by everyone that obtains a copy: free software or open-source software. Typically, this means software which is distributed with a free software license, and whose source code is available to anyone who receives a copy of the software.