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2FASZero-TOTP
Free

Free and open source. Some components are source-available.

 Free

Free and open source under the GPL-3.0.

Android, iOS, Browser extension Web, Self-hosted
  • Browser extension approves codes on the phone instead of typing them
  • Encrypted backups to your own iCloud or Google Drive account
  • Zero-knowledge encryption of stored TOTP secrets
  • Use the hosted service or self-host it
  • Mobile-first; there is no standalone desktop app
  • Push approval needs the browser extension installed on each machine
  • iOS app still in development and CLI only planned
  • Small project with a limited contributor base
Downloadable app, Browser extension Web application, Self-hosted
Open source Open source
License not stated License: GPL-3.0
Not stated if an account is needed Account needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked October 2, 2026

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