I forgot you wrote the "decentralized" part so really that only leaves Jabber.
Discussion
Jabber/XMPP was one of of them, but there were a ton of them based around a P2P architecture. I don't remember names unfortunately.
I forgot you wrote the "decentralized" part so really that only leaves Jabber.
Jabber/XMPP was one of of them, but there were a ton of them based around a P2P architecture. I don't remember names unfortunately.