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2FASAegis Authenticator
Free

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

 Free

Free and open source under the GPL, with no accounts and no paid tier.

Android, iOS, Browser extension Android
  • Browser extension approves codes on the phone instead of typing them
  • Encrypted backups to your own iCloud or Google Drive account
  • The vault is encrypted with AES-256-GCM, unlocked by password with scrypt or by biometrics
  • Automatic backups of the vault to a location you choose, plain or encrypted
  • Mobile-first; there is no standalone desktop app
  • Push approval needs the browser extension installed on each machine
  • Android only
  • No cloud sync; you own the backup process
Downloadable app, Browser extension Downloadable app
Open source Open source
License not stated License: GPL-3.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 21, 2026

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