CoMaps now has more than 7k subscribers across different social media platforms – today reaching 7,777. And the biggest growth is on open-source platforms:
Mastodon - distributed microblogging
Matrix - distributed group messaging
Lemmy - distributed discussion communities
Bluesky - microblogging
Pixelfed - Photos
SimpleX - private messaging
If you have not tried these, check them out!
Note Matrix.org, the largest and default server, is running a commercial closed-source server implementation.
Pick another server if you want to use open-source software and services.
Or pick xmpp instead, the reliable lightweight completely foss alternative.