I see that code.forgejo.org currently has version 11.0 deployed which afaik is not released yet, so is that instance just for testing purposes?
Correct, you just don't see the disclaimer if you go straight to code.forgejo.org. if you are on the main forgejo page and click "try it now" you'll see the disclaimer:
"FOR TESTING ONLY, ALL DATA CAN BE WIPED OUT AT ANY TIME"
So to break it down:
- codeberg e.V. - nonprofit democratic organization that owns codeberg.org and forgejo (or at least funds forgejo)
- Codeberg.org a public forge that runs forgejo
- forgejo.org - the forge software that can be self hosted
- code.forgejo.org - test public forge, data can be deleted without notice
Also worth noting there are other public instances of forgejo and codeberg also encourages of alternative libre forges