Found it on Reddit. It’s most probably incomplete, but it has a “Suggest link” button.
The rules for submitting a link are (as of recent):
- No links to communities who break their service’s ToS or share any illegal content (this should be self-explanatory).
- Link must be an alternative to an existing subreddit. I don’t see sub.rehab as a general fediverse directory (for now).
- Community must have a minimal amount of activity. I am thinking - at least 3 posts that are not submitted by the community’s moderator team. This does not apply for communities that are verified and proven as official replacements of the original subreddit
Awesome website thanks!