The best open source alternative to Facebook is diaspora*. If that doesn't suit you, our users have ranked more than 100 alternatives to Facebook and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Facebook are Mastodon, Minds, Gab and Friendica.
Ktistec is an ActivityPub server. It is intended for individual users, not communities of users, although support for additional users will be added in the future. It is designed to have few runtime dependencies -- for example, it uses SQLite as its database, instead of...
Calckey is based off of Misskey, a powerful microblogging server on ActivityPub with features such as emoji reactions, a customizable web UI, rich chatting, and much more!
A credible alternative to the Facebook & WhatsApp combination, AtomJump.org is open software designed for self-publishing and communicating instantly with your own group of people, while keeping it fully under your own control. The companion .
MOSSLET is a privacy-first social network where you can connect with friends and family, or simply yourself, the way it should be — simple and meaningful. No ads, no algorithms, just your people.
United Kingdom