2fast
2fast is a free, open-source security app for Android and iOS. Two-Factor Authenticator Supporting TOTP (Windows 10 & Android, iOS, Linux and macOS App). It has 565 GitHub stars and is released under the GPL-3.0 license. Its source code is on GitHub at 2fast-team/2fast.
- Android
- iOS
- Desktop
- Password managers & security
- Actively maintained
About 2fast
other installation method (not maintained by me) 2fast (acronym for two factor authenticator supporting TOTP) is a free, open source, two factor authenticator for Windows and other platforms. 2fast has the ability to store the encrypted data at a place of your choice instead of a 3rd party cloud location.
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What is 2fast?
2fast is a free, open-source security app for Android and iOS. Two-Factor Authenticator Supporting TOTP (Windows 10 & Android, iOS, Linux and macOS App). It has 565 GitHub stars and is released under the GPL-3.0 license. Its source code is on GitHub at 2fast-team/2fast.
Is 2fast free and open source?
Yes. 2fast's source code is public on GitHub under the GPL-3.0 license, which is OSI-approved or FSF-free.
How do I install 2fast?
2fast publishes releases on GitHub (latest: v1.5.1); download the build for your device from the repository's Releases page, or build it from source by following the README.
Is 2fast still maintained?
The repository's most recent commit was on Sep 19, 2026. appsgit only lists apps whose repository had a commit in the last six months.