Our sources

mastodon.social
262,684 active accountsOpen registration
The original server operated by the Mastodon gGmbH non-profit

mastodon.online
21,478 active accountsOpen registration
A newer server operated by the Mastodon gGmbH non-profit

mastodon.world
20,422 active accountsOpen registration
Generic Mastodon server for anyone to use.

mas.to
18,778 active accountsOpen registration
Hello! mas.to is a fast, up-to-date and fun Mastodon server.

fosstodon.org
13,347 active accountsOpen registration
Fosstodon is a Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.

hachyderm.io
12,646 active accountsOpen registration
Hachyderm is a safe space, LGBTQIA+ and BLM, primarily comprised of tech industry professionals world wide. Note that many non-user account types have restrictions - please see our About page.

toot.cafe
238 active accountsOpen registration
A Mastodon instance mostly populated by folks interested in web design and development.

front-end.social
175 active accountsOpen registration
Front-end web makers who value humans over technology & embrace diversity on an accessible web. We hope to stay small & grow slowly. Mascots by @stephaniewalter. More at https://about.front-end.social