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2fast

2fast is an open source two-factor authenticator app supporting TOTP, developed by Jan Philipp Weber, that stores its data in a local encrypted file. It is licensed under the GNU GPL version 3.

Licensing at a Glance

  • Open source
  • Freeware

  1. 2fast is released under the GNU General Public License v3.0.[1]

  2. 2fast is free for desktop operating systems, while a fee is required for mobile operating systems.[2]

  3. 2fast needs no account, registration or login, and stores all data in a single encrypted file at a location the user chooses, optionally synchronised via WebDAV.[3]

  4. The Windows version is distributed through the Microsoft Store.[4]

Products

References

  1. 2fast/LICENSE at master · 2fast-team/2fast · github.com · retrieved 2026-09-27
  2. GitHub - 2fast-team/2fast: Two-Factor Authenticator Supporting TOTP (Windows 10 & Android, iOS, Linux and macOS App) · github.com · retrieved 2026-09-27
  3. GitHub - 2fast-team/2fast: Two-Factor Authenticator Supporting TOTP (Windows 10 & Android, iOS, Linux and macOS App) · github.com · retrieved 2026-09-27
  4. GitHub - 2fast-team/2fast: Two-Factor Authenticator Supporting TOTP (Windows 10 & Android, iOS, Linux and macOS App) · github.com · retrieved 2026-09-27
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