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Databag vs SAMA: catalog facts
Databag	SAMA
Free Free and open source under the Apache-2.0 licence.	Free Free and open source under the GPL-3.0 licence.
Android, Web, Self-hosted	Web, Self-hosted
Low hosting resource use Federation between separate server nodes	Server, web client and Flutter client are all open source End-to-end encryption and clustering included
Needs your own server to run Smaller user base than mainstream messengers	Uses its own protocol, so it does not interoperate with XMPP or Matrix Small project with a limited community
Downloadable app, Web application, Self-hosted	Web application, Self-hosted
Open source	Open source
License: Apache-2.0	License: GPL-3.0
Account 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 October 2, 2026

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