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Keet vs Signal: catalog facts
Keet	Signal
Free Free to download and use.	Free Free; developed by a nonprofit funded by grants and donations
Windows, macOS, Linux, Android, iOS	Android, iOS, Windows, macOS, Linux
No phone number or email needed to sign up Messages, calls and files go directly between peers with end-to-end encryption	End-to-end encryption on every message and call using the open source Signal Protocol No ads, affiliate marketers or tracking
Losing the 24-word seed phrase can mean losing access to your identity Peer-to-peer design depends on participants' devices rather than a server	Requires a phone number that can receive an SMS or phone call to register Desktop app requires Signal to be installed on a phone first
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: AGPL-3.0
No account needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 20, 2026

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