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Misskey vs Mitra: catalog facts
Misskey	Mitra
Free Free and open source under the AGPL. Hosting is separate.	Free Free to download and run on your own server.
Web, Self-hosted	Web, Self-hosted
Custom reactions, quotes and a built-in file drive that Mastodon lacks Deep per-instance theming and customisation	Federates with the wider fediverse via ActivityPub Written in Rust with frequent releases
Heavier to run than other fediverse servers Most documentation and community support is in Japanese	You need to host and maintain the server yourself Smaller community than larger fediverse servers
Self-hosted, Web application	Self-hosted
Open source	Open source
License: AGPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.