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Siskin IM vs Dino: catalog facts
Siskin IM	Dino
Free Free; source code is published on GitHub.	Free Free and open source under the GPL.
iOS	Linux
OMEMO end-to-end encryption Audio and video calls over XMPP	Clean desktop client for a federated protocol with OMEMO encryption Supports calls and file transfer, not only text
iPhone and iPad only Needs an XMPP account on a server	Linux focused; other platforms need third-party builds Behaviour depends on the server's feature support
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
Account needed	Not stated if an account is 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 September 22, 2026

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