Google Authenticator has been around for over a decade, is free, and will work with virtually every service that supports ...

Authenticators from Google and Microsoft are already well-established, but the newly released Proton Authenticator may be worth the switch. Proton is the company behind Proton Pass, our top ...

Like all Proton apps, Authenticator is open-source and has been independently audited and verified by third-party experts. It is available for free on Android, iOS, macOS, Windows, and Linux.