A free, secure and open source app for Android to manage your 2-step verification tokens.
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Jun 4, 2025 - Java
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hotp
Here are 261 public repositories matching this topic...
📱 Two-Factor Authentication (2FA) client for Android + Wear OS
android c-sharp steam otp xamarin material-design totp hotp authenticator xamarin-android two-factor-authentication tfa 2fa wearos wear-os motp material-you
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Jun 17, 2025 - C#
[Unmaintained] Open source two-factor authentication for Android
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Jun 14, 2022 - Java
A Web app to manage your Two-Factor Authentication (2FA) accounts and generate their security codes
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Jun 18, 2025 - PHP
**NOT MAINTAINED** Two-factor authentication for Node.js. One-time passcode generator (HOTP/TOTP) with support for Google Authenticator.
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Sep 11, 2023 - JavaScript
🔑 One Time Password (OTP) / 2FA for Node.js and Browser - Supports HOTP, TOTP and Google Authenticator
nodejs otp browser two-factor hotp authenticator hmac google-authenticator two-factor-authentication 2fa one-time-passwords
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Jan 7, 2023 - TypeScript
Minimal TOTP generator in 20 lines of Python
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Jan 21, 2024 - Python
One Time Password (HOTP/TOTP) library for Node.js, Deno, Bun and browsers.
nodejs javascript security node otp browser two-factor auth totp hotp authenticator google-authenticator node-js two-factor-authentication two-step-authentication otpauth two-step bun deno
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Jun 16, 2025 - JavaScript
Enhanced fork of FreeOTP-Android providing a feature-rich 2FA authenticator
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Feb 26, 2025 - Kotlin
Software-based TOTP/HOTP authenticator for Flipper Zero device.
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May 19, 2025 - C
Go-Guardian is a golang library that provides a simple, clean, and idiomatic way to create powerful modern API and web authentication.
go golang ldap authentication guardian auth x509 tokens passport totp hotp authenticator ldap-authentication golang-library bearer-tokens strategies 2fa certificate-authentication go-passport go-guardian
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Jul 25, 2024 - Go
Highly secure and easy to use OTP client written in C/GTK3 that supports both TOTP and HOTP
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May 17, 2025 - C
A one-time password (HOTP/TOTP) library for Java
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Jul 31, 2022 - Java
A Material You Two-factor Authentication app
android kotlin otp totp hotp google-authenticator two-factor-authentication 2fa 2factor 2fa-client kotlin-android-application two-factor-authenticator jetpack-compose jetpack-compose-app
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Feb 15, 2025 - Kotlin
Experimental Single Sign On server, OAuth2, Openid Connect, multiple factor authentication with, HOTP/TOTP, FIDO2, TLS Certificates, etc. extensible via plugins
c ldap oauth2 otp reactjs openidconnect yubikey totp hotp openid-connect authentication-backend ulfius hoel tls-certificate webauthn fido2 oidc-server n-factor-authentication
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Oct 20, 2024 - C
multiOTP open source strong two factor authentication PHP library, OATH certified, with TOTP, HOTP, Mobile-OTP, YubiKey, SMS, QRcode provisioning, etc.
php ldap synchronization otp authentication offline sms active-directory yubikey totp hotp yubico credential-provider 2fa yubico-otp yubikey-authenticators motp
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Jan 20, 2025 - PHP
🔑 A small library for generating TOTP and HOTP one-time passwords on iOS.
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Aug 19, 2024 - Swift
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