Plebbit is a selfhosted, opensource, nonprofit social media protocol, this project was created due to wanting to give control of communication and data back to the people.
Plebbit only hosts text. Images from google and other sites can be linked/embedded in posts. This fixes the issue of hosting any nefarious content.
ENS domain are used to name communities.
Plebbit currently offers different UIs. Old reddit and new reddit, 4chanw, andhave a Blog. Plebbit intend to have an app, internet archive, wiki and twitter and Lemmy. Choice is important. The backend/communities are shared across clients.
It's not a competing standard, it's a whole new approach to decentralize forum-based social media.
ActivityPub is not fully decentralized, it's a federated design, meaning it's a network of instances, and each instance is just a regular website with servers. Anyone can run an instance, but it's expensive, tiresome and you'll get banned for it; they are regular websites.
whereas Plebbit is fully decentralized, it's purely peer to peer, meaning it's a network of peers where every peer can potentially be a full node by simply using the desktop app (or in the future, a non custodial public rpc on mobile), and you don't have to run any site/domain for it, it's censorship resistant just like running a torrent with a BitTorrent client.
Also to be clear: like ActivityPub is a protocol with clients, such as Mastodon and Lemmy, Plebbit is a protocol with clients, such as Seedit and Plebchan.
Reading these comments about your work must be so hard. I remember getting this kind of feedback for my projects from know-it-alls who never completed anything themselves. Keep up the good work, decentralize everything!