[A sort of counterpoint to App.net, Tent is a truly decentralized social media protocol][link]. It even integrated with Tor to help those in nations that which to stifle free speech.
It’s a protocol, like HTTP or email, not just a service. It’s fully open source. This is interesting. I hope that it becomes more friendly and stable and active than, say, Jabber.
[link]: http://tent.io/ “Tent – the decentralized social web”