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Tumblr vs Misskey: catalog facts
Tumblr	Misskey
Free Free to join and post.	Free Free and open source under the AGPL. Hosting is separate.
Web	Web, Self-hosted
Reblogging makes sharing and discovery easy Mix of text, image and video posts	Custom reactions, quotes and a built-in file drive that Mastodon lacks Deep per-instance theming and customisation
Centralised, proprietary platform owned by a single company	Heavier to run than other fediverse servers Most documentation and community support is in Japanese
Web application	Self-hosted, Web application
Closed source	Open source
License not stated	License: AGPL-3.0
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 October 2, 2026	Official website Full listing and sources Checked September 22, 2026

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