GNU social - GNU social is communication software for both public and private communications.

Mumblit Social - Mumblit Social is the best-in-class social media application that allows you to stay connected with friends directly through your iOS device.

YouWeb - The first social network focused on your way to experience the Web and interact with virtual...

Mastodon - Mastodon is a decentralized, open source social network. This is just one part of the network, run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome!

Gab - Gab is an ad-free social network dedicated to free speech.

Pleroma - Pleroma is a free, federated social networking server built on open protocols.