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Monal vs Siskin IM: catalog facts
Monal	Siskin IM
Free Free and open source under a BSD license.	Free Free; source code is published on GitHub.
macOS, iOS	iOS
Native app for iOS, iPadOS and macOS Works with any XMPP server, including self-hosted ones	OMEMO end-to-end encryption Audio and video calls over XMPP
Apple platforms only Needs an XMPP account from a provider or your own server	iPhone and iPad only Needs an XMPP account on a server
Downloadable app	Downloadable app
Open source	Open source
License: BSD	License not stated
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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