Alternatives to Authy
Mobile two-factor authenticator with encrypted cloud backup. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Authy
Mobile two-factor authenticator with encrypted cloud backup.
Replacements
Listings that take over the same core job as Authy.
2FAS
Open-source authenticator app with browser-extension push approvals.
2FAS is open source, adds browser-extension push approvals, and backs up encrypted to your own iCloud or Google Drive account instead of a phone-number account.
Ente Auth
Open-source two-factor authenticator with end-to-end encrypted backups.
Ente Auth is open source and adds desktop and web clients with free end-to-end encrypted cloud backup, though backup relies on an Ente account.
Google Authenticator
Google's mobile app that generates one-time verification codes for two-step verification.
Google Authenticator also syncs codes across devices, through a Google Account rather than a phone number, and is likewise closed source and mobile only.
Microsoft Authenticator
Microsoft's mobile authenticator app for multi-factor and passwordless sign-in to personal and work accounts.
Microsoft Authenticator adds passwordless sign-in for Microsoft personal and work accounts, but it is closed source, mobile only and most useful inside the Microsoft ecosystem.
Aegis Authenticator
An encrypted two-factor authentication app for Android with real backups and imports from every other authenticator.
Aegis is open source with an AES-256-GCM encrypted vault and backups you control, but it runs only on Android and has no cloud sync.
Proton Authenticator
A free two-factor authentication app from Proton with end-to-end encrypted sync between your devices and no advertising.
Proton Authenticator is open source and adds desktop apps with end-to-end encrypted sync, but sync requires a Proton account and it has fewer import paths.
Bitwarden Authenticator
A standalone mobile app from Bitwarden that generates and stores two-step verification codes.
Bitwarden Authenticator is a free standalone mobile app from a password manager vendor, but few import, export or backup details are published.
FreeOTP
An open-source two-factor authentication app for Android and iOS that generates one-time codes.
FreeOTP is a free open-source mobile app available on F-Droid as well as Google Play and the App Store, with minimal documentation.
Also worth comparing
These listings name Authy as their own alternative, so the relationship runs both ways.
Duo Mobile
Enterprise multi-factor authentication app with push approvals.
Authy offers encrypted backup and multi-device sync on Android and iOS, but it is closed source and account recovery is tied to a phone number.
Step Two
A two-step verification code app for iPhone, iPad, Apple Watch and Mac with iCloud backup.
Authy is free on iOS and Android with encrypted cloud backup and multi-device sync, but has no Mac app and ties recovery to a phone number.
Stratum
A free and open-source two-factor authentication app for Android with encrypted backups and Wear OS support.
Authy is closed source on Android and iOS with encrypted cloud backup and multi-device sync, but ties account recovery to a phone number.
Yubico Authenticator
An app that shows two-factor codes from OATH credentials stored on a YubiKey.
Authy keeps codes on Android or iOS with encrypted cloud backup and multi-device sync, has no desktop app, and ties recovery to a phone number.
Similar software
Related functionality, not a direct replacement.
Bitwarden
An open-source password manager with free cross-device sync, apps for every platform and optional paid plans.
1Password
Subscription password manager for individuals and families that stores, fills and shares passwords and passkeys.
heylogin
A German password manager that uses your phone as the key instead of a master password.
