@chrismessina @arxpoetica @Rich_Harris @johnmccrea @daveman692 @jsmarr @willnorris @jasnell @robdolin @apparentlymart @ciberch ActivityPub is descended from https://t.co/gya0HpzyWL but so much more work has gone into it and the federated social web thanks to @dustyweb and their collaborators.

@MastodonProject is currently the most famous implementer, but far far far from the only.