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stashcat vs Signal: catalog facts
stashcat	Signal
Paid The site directs organisations to request a quote or consultation.	Free Free; developed by a nonprofit funded by grants and donations
Web	Android, iOS, Windows, macOS, Linux
Chat, video calls, and broadcast lists Groups, polls, and appointments	End-to-end encryption on every message and call using the open source Signal Protocol No ads, affiliate marketers or tracking
Aimed at organisations and requires a sales inquiry	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
Web application, Self-hosted, Hosted service	Downloadable app
Closed source	Open source
License not stated	License: AGPL-3.0
Not stated if an account is needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 20, 2026

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