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OATH ToolkitAuthenticator
Free

Free software; tools use GPL-3.0-or-later and libraries use LGPL-2.1-or-later.

 Free

Free and open source under the GPL 3.0 or later.

Command line Linux
  • Generates and validates HOTP and TOTP codes
  • Includes tools for managing PSKC data
  • Supports both TOTP and HOTP codes
  • Fits in with the GNOME desktop
  • The tools use GPLv3-or-later and the libraries use LGPLv2-or-later.
  • Built for Linux desktops only
  • Codes live on the desktop rather than on a phone you carry
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0-or-later AND LGPL-2.1-or-later License: GPL-3.0-or-later
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked October 8, 2026

Checked September 24, 2026

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