GNU FSDG

GNU Free System Distribution Guidelines

+ Complete (self-hosted) Distros
- License Rules  ("must not recommend")
+ Nonfree Firmware ("should be removed")
+ Non-functional Data
+ Trademarks
- Documentation ("must not recommend")
+ Patents
+ No Malware
+ Commitment to Correct Mistakes
+ Maintenance
+ Contacting Upstream If You're Downstream
+ Teach Users about Free Software
- Avoid Repeating Propaganda and Confusion

https://www.gnu.org/distros/free-system-distribution-guidelines.html
Deutsche Version: https://www.gnu.org/distros/free-system-distribution-guidelines.de.html