Best authenticator apps
Two-factor (2FA/TOTP) authenticator apps for phones and desktops, from big-name defaults to open-source, encrypted-sync and hardware-backed options.
20 apps, ordered by visits from AppBreakup and how often our research lists each one as an alternative. Open any app to see its alternatives.
All authenticator apps
- Alternatives to Ente Auth
A free, open-source authenticator with end-to-end encrypted sync across mobile, desktop and web.
Open sourceSelf-hostableAndroid, iOS, Windows, macOS, Linux, Web - Alternatives to 2FAS Auth
A free, open-source authenticator for iPhone and Android that needs no account and pairs with a browser extension.
Open sourceiOS, Android, Browser extension - Alternatives to Proton Authenticator
Proton's free, open-source 2FA app with end-to-end encrypted sync on phones, Apple Watch and desktop.
FreeOpen sourceiOS, Android, macOS, Windows, Linux - Alternatives to Aegis Authenticator
A free, open-source Android authenticator with an encrypted vault, imports from other apps and automatic backups.
Open sourceAndroid - Alternatives to Microsoft Authenticator
Microsoft's free authenticator for Android and iOS, built around push and passwordless sign-in for Microsoft accounts.
FreeAndroid, iOS - Alternatives to Bitwarden Authenticator
A free, open-source standalone authenticator app for iOS and Android from the makers of Bitwarden.
FreeOpen sourceiOS, Android - Alternatives to Google Authenticator
Google's free authenticator app for Android and iOS, with optional code sync through your Google Account.
FreeAndroid, iOS - Alternatives to FreeOTP+
An open-source Android fork of FreeOTP that adds backups, search, categories and biometric lock.
Open sourceAndroid - Alternatives to Duo Mobile
Cisco Duo's authenticator app for push approvals at work, which also generates codes for personal accounts.
Free plan + paidiOS, Android - Alternatives to Okta Verify
Okta's authenticator app for confirming sign-ins to Okta-protected work apps with push or one-time codes.
FreeiOS, Android, Windows, macOS - Alternatives to Stratum
A free, open-source Android authenticator, formerly Authenticator Pro, with encrypted backups and Wear OS support.
Open sourceAndroid - Alternatives to Authenticator (GNOME)
A simple, open-source two-factor code generator for the Linux desktop, built for GNOME.
Open sourceLinux - Alternatives to OTPClient
An open-source GTK4 app for Linux that manages TOTP and HOTP tokens in encrypted local databases, with a CLI.
Open sourceLinux - Alternatives to FreeOTP
A minimal, open-source authenticator sponsored by Red Hat, implementing the open HOTP and TOTP standards.
Open sourceAndroid, iOS - Alternatives to Step Two
A clean, indie authenticator for iPhone, iPad and Mac that syncs codes with iCloud and fills them in Safari.
Free plan + paidiOS, macOS - Alternatives to Tofu
A minimal, free and open-source authenticator for iPhone that keeps codes in the iOS keychain with no cloud.
Open sourceiOS - Alternatives to Twilio Authy
Twilio's free authenticator app with encrypted cloud backup and multi-device sync tied to your phone number.
FreeAndroid, iOS - Alternatives to Yubico Authenticator
A free authenticator app that stores TOTP secrets on a YubiKey instead of the phone or computer.
FreeOpen sourceWindows, macOS, Linux, Android, iOS - Alternatives to LastPass Authenticator
LastPass's free authenticator app with one-tap push approval for LastPass logins and codes for other sites.
FreeiOS, Android - Alternatives to Zoho OneAuth
Zoho's free multi-factor authentication app for Zoho accounts that also stores 2FA codes for other services.
FreeiOS, Android, Windows, macOS
Our picks by need
Best for most people
Ente AuthBest for a free option
2FAS AuthBest for open source
Proton AuthenticatorBest for self-hosting
Ente AuthBest for Mac
Okta VerifyBest for Windows
Yubico AuthenticatorBest for Linux
Authenticator (GNOME)Best for iPhone and Android
Microsoft AuthenticatorPopular comparisons
Common questions
What are the best authenticator apps?
Based on how often our research lists them as alternatives and visits from AppBreakup, the leading authenticator apps right now are Ente Auth, 2FAS Auth, Proton Authenticator, Aegis Authenticator and Microsoft Authenticator.
Are there free authenticator apps?
Yes. Ente Auth (open source), 2FAS Auth (open source), Proton Authenticator (free), Aegis Authenticator (open source) and Microsoft Authenticator (free) have a free option, out of 20 free or freemium apps we track.
Which authenticator apps are open source?
Ente Auth, 2FAS Auth, Proton Authenticator, Aegis Authenticator, Bitwarden Authenticator and FreeOTP+, and 6 more.