Federated, ActivityPub-compatible social network with friends, walls, and (at some point in the future) groups. At the moment, this is very far from being production-ready. Things may and likely will break.
[https://github.com/grishka/Smithereen/releases/tag/0.4.3] - Somewhat rewritten news feed with similar entry grouping (John added 5 friends vs 5 separate entries) - Bug fixes