switching.social is a user on mastodon.at. You can follow them or interact with them if you have an account anywhere in the fediverse. If you don't, you can sign up here.

Some more to follow on :

@lib_reviews Lib.reviews: Building an open alternative to Yelp

@pixelfed PixelFed: Ethical alternative to Instagram, launching very soon

@mhall119 GetTogether: Account of the lead developer on an alternative to MeetUp.com

@openstreetmap OpenStreetMap: The open source mapping project, mirrored on the OSM English instance 🗺️

@inventaire Inventaire: An open source book exchange site, you make new friends and lend each other books 📚