@J12t If you’re looking for servers that implement it, the #ActivityPub implementation reports might be useful. https://activitypub.rocks/implementation-report/ I’m interested in knowing about clients that implement it and have a feature set remotely comparable to the Mastodon clients.
@steve my understanding is that those are largely out of date. Here’s the repo: https://gitlab.com/dustyweb/activitypub.rocks/tree/master/reports and the dates are years ago.