A New HOPE (2022): ActivityPub Four Years Later: The Good, the Bad, and the Fedi
Fediverse@kbin.social – 13 points – 
youtu.be
super interesting talk on activitypub/fediverse.
Fediverse@kbin.social – 13 points – Fediverse@kbin.social – 13 points – Fediverse@kbin.social – 13 points – super interesting talk on activitypub/fediverse.
Viewing this video, I found that the ActivityPub is technically a protocol to send/receive social contents in each instance from/to each other.
More interesting thing I found is that it's not only for remaking twitter/facebook/instagram, but also for creating self-controllable novel social internet experiences.
I hope if I can create such collaborative/controllable/secure social tools with it.
You might want to look at https://beehaw.org/post/558211. The Wikipedia article it links too specifically talks about all of the other apps that already exist on the Fediverse.