The Single Sign-On Multi-Factor portal for web apps, now OpenID Certified™

An open-source UI-first Identity and Access Management (IAM) / Single-Sign-On (SSO) platform with web UI supporting OAuth 2.0, OIDC, SAML, CAS, LDAP, SCIM, WebAuthn, TOTP, MFA, Face ID, RADIUS, Google Workspace, Active Directory and Kerberos

A free, secure and open source app for Android to manage your 2-step verification tokens.

🧑‍🚀 Open-source identity infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.

🧰 A zero trust swiss army knife for working with X509, OAuth, JWT, OATH OTP, etc.

[Unmaintained] Open source two-factor authentication for Android

📱 Two-Factor Authentication (2FA) client for Android + Wear OS

Python One-Time Password Library

**NOT MAINTAINED** Two-factor authentication for Node.js. One-time passcode generator (HOTP/TOTP) with support for Google Authenticator.

A Web app to manage your Two-Factor Authentication (2FA) accounts and generate their security codes

🔐 A PHP library for generating one time passwords according to RFC 4226 (HOTP) and the RFC 6238 (TOTP)

Minimal TOTP generator in 20 lines of Python

Extract one time password (OTP) secrets from QR codes exported by two-factor authentication (2FA) apps such as "Google Authenticator". The exported QR codes from authentication apps can be captured by camera, read from images, or read from text files. The secrets can be exported to JSON or CSV, or printed as QR codes to console.

One Time Password (HOTP/TOTP) library for Node.js, Deno, Bun and browsers.

A .NET implementation of TOTP and HOTP for things like two-factor authentication codes.

PHP library for Two Factor Authentication (TFA / 2FA)

Yubico Authenticator for Desktop (Windows, macOS and Linux) and Android

Take security by obscurity to the next level (this is a bad idea, don't really use this please)

🔢 better code inputs for react/web

Go library and program to access your Authy TOTP secrets.