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Sable vs Haven: catalog facts
Sable	Haven
Free Free and open source under the AGPL-3.0.	Free Free and open source under the AGPL-3.0.
Linux, Web	Linux, Web
Builds on Cinny with many extra features Usable in the browser or as a Linux app	Social feed and profiles built on the open Matrix protocol Based on the mature Element Web client
In constant development, so features change often Requires a Matrix account	Small, young project with few contributors Social event types depend on a spec proposal that is not yet standard
Downloadable app, Web application	Downloadable app, Web application
Open source	Open source
License: AGPL-3.0-only	License: AGPL-3.0
Account needed	Account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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