GNU social - GNU social is communication software for both public and private communications.
PixelFed - PixelFed is a federated image sharing platform, powered by the ActivityPub protocol.
YouWeb - The first social network focused on your way to experience the Web and interact with virtual...
Gab - Gab is an ad-free social network dedicated to free speech.
Friendica - Decentralisation - Privacy - Interoperability
Pleroma - Pleroma is a free, federated social networking server built on open protocols.