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Databag vs Prosody: catalog facts
Databag	Prosody
Free Free and open source under the Apache-2.0 licence.	Free Free and open source under the MIT licence.
Android, Web, Self-hosted	Self-hosted
Low hosting resource use Federation between separate server nodes	Simple setup and low resource use Federates with other XMPP servers
Needs your own server to run Smaller user base than mainstream messengers	Requires a server and some administration Users need a separate XMPP client
Downloadable app, Web application, Self-hosted	Self-hosted
Open source	Open source
License: Apache-2.0	License: MIT
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 September 23, 2026

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