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Mastodon vs Ktistec: catalog facts
Mastodon	Ktistec
Free Free and open source under the AGPL. Hosting is separate.	Free Free to download and run on your own server.
Android, Web, Self-hosted	Web, Self-hosted
Chronological timelines with no engagement ranking Federated, so moving servers does not mean losing your network	Built for single users and small groups Federates with Mastodon and other ActivityPub software
Your experience depends heavily on which server you join Running a server has real moderation and maintenance cost	Not designed for large public communities Requires running and maintaining your own server
Self-hosted, Web application	Self-hosted
Open source	Closed 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	Needs internet
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 1, 2026

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