Free Software Foundation
- https://www.fsf.org
- https://www.fsf.org/free-software-supporter/2021/august
- https://www.fsf.org/resources/lists
- https://www.fsf.org/news/bilski-and-patent-absurdity
- https://www.fsf.org/blogs/community/the-threat-of-software-patents-persists
- https://www.youtube.com/watch?v=OUAGs2lc4OU
- https://twitter.com/fsf