Protect your accounts.
Really.
- Free & open-source.
- Easily synchronize your TOTPs (Time-based One-Time Password).
- Protect your data.
- Use it on (almost) any platform.
100%
Free & open-source0
Ad or tracker5
Supported platformsGPL v3
Open-source licenseEverything you need.
Nothing more.
Designed to be simple, reliable, and respectful of your data. With no compromise on security.
Standard format
Compatible with all services that support two-factor authentication: Google, GitHub, Discord, and thousands of others.
Synchronization
Because it would be a shame to lose access to your accounts when changing phones. You can also self-host the backend if you want to (more info).
Private data
Your data is encrypted before being transmitted using a key derived from a master password.
Cross-platform
One project, all platforms. Android, iOS, macOS, Windows, and Linux — built with Flutter.
Translations
The app is multilingual and translated by the community. Join the contributors and help make it accessible to everyone.
Ultra-lightweight
No bloat, no unnecessary permissions. The app does what it says, and nothing else, quickly.
Available everywhere.
Built with Flutter, Open Authenticator runs natively on all major platforms. Choose yours.
Open to everyone.
The source code is fully public under the GNU GPL v3 license. You can audit it, fork it, contribute to it, or simply trust it.
Want to help? Contribute via pull requests on GitHub, suggest new translations, or make a donation to support the project.
Secure your accounts
now.
Free, open-source, cross-platform and easy to use. No ads, no tracking, no data collection. Download Open Authenticator now, and take control of your security again.