http://pierovggsterf4w5xplynqtl56srftc242l3g2xloqlty6nv7372xuyd.onion
However, some of them are kinda unique, particularly their SCM: Mercurial. Today, open source is almost a git monoculture, and it is the versioning system I have used most of the time. Therefore, I got used to forks, PRs/MRs, and so on.