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WireSignal
Freemium

A limited free personal tier is available. Business plans are paid.

 Free

Free; developed by a nonprofit funded by grants and donations

Windows, macOS, Linux, Android, iOS, Web Android, iOS, Windows, macOS, Linux
  • Encrypted group calls and guest rooms aimed at organisations
  • Clients are open source and the server can be self-hosted
  • End-to-end encryption on every message and call using the open source Signal Protocol
  • No ads, affiliate marketers or tracking
  • The free personal tier is limited and the focus is on paid business plans
  • Requires an account tied to an email address or phone number
  • 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, Hosted service Downloadable app
Open source Open source
License: GPL-3.0 License: AGPL-3.0
Account needed Account needed
Not stated if it works offline Needs internet

Checked September 22, 2026

Checked September 20, 2026

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