The following is a generalcomparison of OTP applications that are used to generateone-time passwords fortwo-factor authentication (2FA) systems using thetime-based one-time password (TOTP), theHMAC-based one-time password (HOTP) algorithms or Mobile-OTP (mOTP)[1], which is an older, open source, 2FA system for mobile phones that combines a user’s PIN, time and a per-device secret to generate OTPs. It also lists apps that support proprietary authentication methods, like those used by Steam or Yandex.
The following is an overview of authenticator applications that operate independently and are not integrated into password managers.
| Name | License | Operating system support | Browser integration | Delivery format |
|---|---|---|---|---|
| 2FAS[2] | Open source | Android,iOS,iPadOS,watchOS | Yes, autofill via browser extension connected to mobile app | Local installation with sync via iCloud or Google Drive |
| 2FAuth[3] | Open source | Cross-platform web application | No | Local installation |
| 2fast[4] | Open source | Windows | Unknown | Local installation |
| Aegis Authenticator[5] | Open source | Android | Unknown | Local installation withcloud sync |
| andOTP[6] (unmaintained)[7] | Open source | Android,iOS,Linux,macOS,Windows | Unknown | Local installation with cloud sync |
| Authenticator App by 2Stable[8] | Proprietary /Freemium | iOS,iPadOS,macOS,watchOS, browser extension for Chrome, Edge, Firefox and more | Unknown | Local installation |
| Authy | Proprietary /Freeware | Android,iOS,iPadOS,watchOS. Dropped support for Linux, Mac and Windows | Unknown | Local installation |
| Bitwarden Authenticator | Open source | Android, iOS, iPadOS, visionOS | Unknown | Local installation with backup via iCloud or Google Drive |
| Authenticator[9] | GPL-3.0-or-later | Linux | Unknown | Local installation |
| Duo Mobile[10] | Proprietary /Freeware | Android, iOS, iPadOS, watchOS | Unknown | Local installation |
| Ente Auth | AGPL-3.0 | Android, iOS, iPadOS, Linux, macOS, Windows | Unknown | Local installation with cloud sync |
| FreeOTP[11] | Open source | Android, iOS, iPadOS | Unknown | Local installation |
| GAuth Authenticator[12] | GPL | Web based app | No | Local installation or hosted web application |
| Google Authenticator | Proprietary freeware | Android, iOS, iPadOS, Blackberry,Wear OS | Unknown | Local installation with cloud sync |
| Hotpants[13] | GPL-2.0 | J2ME | Unknown | Local installation |
| IBM Verify | Proprietary freeware | Android, iOS, iPadOS | Unknown | Local installation |
| LastPass Authenticator[14] | Proprietary | Android, iOS, iPadOS, watchOS | Yes, autofill via browser extension connected to mobile app | Local installation with cloud sync |
| Microsoft Authenticator | Proprietary | Android, iOS, iPadOS, visionOS | No | Local installation with cloud sync |
oathtool[15] | Open source | Linux | Unknown | Local installation |
| Open Authenticator[16] | Open source | Android, iOS, iPadOS, Linux, macOS, Windows | Unknown | Local installation |
| Proton Authenticator[17] | GPL-3.0-or-later | Android,iOS,macOS,Windows,Linux | Unknown | Local installation with cloud sync |
| SAASPASS Authenticator[18] | Proprietary | Android, iOS, iPadOS, watchOS, macOS | No | Local installation with cloud sync |
| Stratum[19] | GPL-3.0 | Android, Wear OS | Unknown | Local installation with cloud sync |
| Symantec VIP | Proprietary | Android, iOS, watchOS, macOS, Windows | Unknown | Local installation |
| Tessera[20] | Open source | SymbianS60 5th Edition, initial support for desktop | Unknown | Local installation |
| TOTP ME[21] | Open source | J2ME | Unknown | Local installation |
| TOTP.APP[22] | Open source | Cross-platform web application | Unknown | Web-based |
| Yandex Key[23] | Proprietary | Android, iOS, iPadOS | Unknown | Local installation |
| Yubico Authenticator for Desktop[24] | Proprietary | Linux,macOS,Windows | Unknown | Local installation |
| Yubico Authenticator for Mobile | Proprietary | Android,iOS | Unknown | Local installation |
The following is an overview of password managers that include an integrated authenticator feature.
| Implementation | Description | Onlinesync. | Operating system / Platform | Default | Non-default | Import methods | Export methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Windows | Mac | Linux | iOS | Android | Other | HOTP | Value length,d | Hash, H | Interval,TX | Epoch,T0 | Other:Steam or mOTP | QR | JSON | QR | JSON | |||
| 1Password | Cross-platform password manager[29] | Yes | Yes | Yes | Yes | Yes | Yes | No | Unknown | No | Unknown | Unknown | Unknown | Unknown | ||||
| 2FAS[2] | Popular, feature rich open-source two-factor authenticator. No account required. | Online backup/sync via iCloud or Google Drive | Through browser extension connected to mobile app | Yes | Yes | No | Yes | Yes | Yes | Yes | No | No | Yes | Yes | No | Yes | ||
| 2FAuth[3] | An open-sourcePHP web based self-hosted OTP generator, designed for both mobile and desktop. | Yes, web based | No | Unknown | Yes | Yes | Yes | No | Steam | |||||||||
| 2fast[4] | Open-source two-factor authenticator. No account required. Available in Windows App Store. | No | Yes | No | No | No | No | No | Unknown | Unknown | Unknown | Unknown | Unknown | Unknown | ||||
| Aegis Authenticator | Free and open source app for Android to manage your 2-step verification tokens.[5] | Automatic backup to a location of your choosing | No | No | No | No | Yes | No | Unknown | Yes | Yes | Yes | No | Steam | Yes | Yes | Yes | Yes |
| andOTP[6] (unmaintained - json file handled by Aegis)[7] | Open-source app for Android 4.4+. Compatible with Google Authenticator. | No | No | No | No | No | Yes | No | Unknown | No | No | Yes | No | No | Yes | Yes | ||
| Apple Keychain | Native password manager on Apple devices. Not on tvOS.[30] | Yes[31] | Yes[32] | Yes | No | Yes | No | Apple Vision Pro | Unknown | Yes | Yes | Yes | Unknown | Unknown | Yes | The Setup URL (otpauth://) can be manually copied for each item from the edit screen of the Passwords app | ||
| Authenticator[9] | GNOME circle application. Free and Open Source, community-provided, but not shipped as part of GNOME's Core apps | No | No | No | Yes | No | No | Any desktop or mobile platform where GNOME can run | Yes | Yes | Yes | Yes | Yes | Steam | Yes | Yes | Yes | Yes |
| Authenticator App by 2Stable[8] | Secure two-factor authentication app for iPhone, iPad, iPod, Apple Watch and Mac. Freemium app with max 2 accounts in the free version.[33] | Yes | No | Yes | No | Yes | No | No | Unknown | Yes | Yes | Yes | Unknown | No | ||||
| Authy | ByTwilio, from 2015, originally Authy.[34] Previously available for Chrome.[35] | Yes | Discontinued March 19, 2024[36] | Yes | Yes | No | Unknown | Yes | No | No | No | No | ||||||
| Bitwarden | Open Source Cross platform password manager. 2FA is a premium feature.[37] | Yes | Yes | Yes | Yes | Yes | Yes | No | Unknown | Yes | Yes | Yes | Unknown | Steam[38] | Yes | Yes | No | Yes |
| Bitwarden Authenticator | Free and open source app for Android and iOS to manage your 2-step verification tokens.[39] | No | No | No | No | Yes | Yes | No | Unknown | No | No | No | No | No | ||||
| Duo Mobile[10] | Free 2FA authenticator provided by Cisco | Yes, through iCloud or Google Drive | No | No | No | Yes | Yes | No | Unknown | Unknown | Unknown | Unknown | Unknown | No | ||||
| Enpass[40] | Password manager by Sinew Software Systems. Syncs over multiple back-ends. | Yes | Yes | Yes | Yes | Yes | Yes | No | Unknown | Yes | No | Yes | Unknown | No | Yes | |||
| Ente Auth | Free, open source, cross-platform authenticatior with encrypted cloud sync.[41] | Yes | Yes | Yes | Yes | Yes | Yes | Web | Unknown | Unknown | Unknown | Unknown | Unknown | Steam[42] | ||||
| FreeOTP[11] | Maintained byRedHat, and based on Google Authenticator. | No | No | No | No | Yes | Yes | No | Unknown | Yes | Yes | Yes | No | No | ||||
| GAuth Authenticator[12] | A simple application formulti-factor authentication, written inHTML usingjQuery Mobile (and PhoneGap), jsSHA and LocalStorage. | Unknown | Yes | Yes | Yes | No | No | No | Unknown | Unknown | Unknown | Unknown | Unknown | Unknown | ||||
| Google Authenticator | Yes | No | No | No | Yes | Yes | No | Yes | No | No | No | No | No | Yes | No | Yes | No | |
| Hotpants[13] | Free, open-sourceJ2MEMIDlet app to manage your TOTPs and HOTPs. | Import via scanning QR code on screen | No | No | No | No | No | J2ME | Yes | Unknown | Unknown | Unknown | Unknown | No | ||||
| IBM Security Verify | Unknown | No | No | No | Yes | Yes | No | Unknown | Unknown | Unknown | Yes | Unknown | Unknown | |||||
| Invantive Authenticator[43] | Focuses on integration with Invantive Keychain. | No | Yes | No | No | No | No | No | Unknown | Yes | Yes | Yes | Yes | No | ||||
| KeePassXC[44] | Password manager | Through user setup withSyncthing,[45][better source needed] or only within the KeeWeb[46] online web App[47] | Yes | Yes | Yes | No | KeePassDX[48] | No | Unknown | Yes | Yes | Yes | No | Steam | Yes | |||
| LastPass Authenticator[14] | Cross-platform OTP for mobile devices with support for online backup. | Yes | No | No | No | Yes | Yes | No | Unknown | Yes | Yes | Yes | No | No | Yes | |||
| Microsoft Authenticator | Yes | No | No | No | Yes | Yes | No | No | No | No | No | No | No | No | No | No | No | |
oathtool[15] | Command-line tool for generating OTP tokens. | No | No | No | Yes | No | No | FreeBSD,[49]NetBSD,[50]OpenBSD[51] | Unknown | Yes | Yes | Yes | Yes | Unknown | ||||
| Open Authenticator[16] | Free, open-source and multiplatform app to manage your TOTPs. | Yes, requires a subscription for more than 6 TOTPs | Yes | Yes | No | Yes | Yes | No | No | Yes | Yes | Yes | No | No | ||||
| privacyIDEA Authenticator[52] | For use withprivacyIDEA Authentication Server, with a secure enrollment process. | No | No | No | No | Yes | Yes | No | No | Yes | Yes | Yes | No | Unknown | ||||
| Proton Authenticator[17] | Open source and available on every device. Securely sync and backup 2FA codes easily. No account required. | Yes, via a Proton Account, or via iCloud on Apple devices | Yes | Yes | Yes | Yes | Yes | No | No | Yes | Yes | Yes | No | Steam | No | Yes | No | Yes |
| SAASPASS Authenticator[18] | Cross-platform 2FA Authenticator with TOTP & HOTP generator with sharing capabilities and password manager integration. Multiple device support, Mobile app and web access with multiple backup capabilities. | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | Yes | Yes | Yes | Steam | ||||
| Stratum[19] | Free and open-source two-factor authentication app for Android | Unknown | No | No | No | No | Yes | WearOS | Yes | Unknown | Unknown | Unknown | Unknown | Steam & mOTP | ||||
| Symantec VIP | Unknown | No | No | No | Yes | Yes | No | Unknown | Unknown | Unknown | Unknown | Unknown | Unknown | |||||
| Tessera[20] | Free, open-sourceQt for Symbian and desktop app to manage your TOTPs. | Unknown | Initial support for desktop | No | Could be ported | SymbianS60 5th Edition | Unknown | Unknown | Unknown | Unknown | Unknown | Unknown | ||||||
| TOTP ME[21] | Free, open-sourceJ2MEMIDlet app to manage your TOTPs. | Manually | UsingMicroEmulator app[53] | Unknown | UsingJ2ME Loader app[54] | J2ME or any with J2ME support or emulator | Unknown | Yes | Yes | Yes | Time correction in seconds | No | ||||||
| TOTP.APP[22] | Web-based authenticator not requiring registration. | No | Yes | Yes | Yes | Yes | Yes | No | No | No | No | No | No | No | ||||
| Yandex Key[23] | Simple app for phones from Russian company | Yes, manually, for 1 year | No | No | No | Yes | Yes | No | No | Unknown | Unknown | Unknown | Unknown | Unknown | ||||
| Yubico Authenticator for Desktop[24] | ByYubico, for use withYubikeys. | No | Yes | Yes | Yes | — | — | No | No | Yes | Yes | Yes | No | No | ||||
| Yubico Authenticator for Mobile | — | — | — | Yes | Yes | |||||||||||||