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WhatsAppSession
Free

Free to use for personal messaging and calls.

 Free

Free and open source under the GPL 3.0, run by the Session Technology Foundation.

Windows, macOS, Android, iOS, Web Windows, macOS, Linux, Android, iOS
  • End-to-end encrypted messages and calls
  • Available on phones, desktop and the web
  • No phone number or email needed; the account is a random ID
  • Onion routing hides your address from recipients and from the network
  • Proprietary and tied to a phone number account
  • Relies on a central service run by the developer
  • Losing your recovery phrase means losing the account with no reset
  • Delivery can be slower than a centralised messenger
Downloadable app, Web application Downloadable app
Closed source Open source
License not stated License: GPL-3.0
Account needed No account needed
Needs internet Works offline

Checked September 24, 2026

Checked September 21, 2026

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