totp

The Single Sign-On Multi-Factor portal for web apps

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

[Unmaintained] Open source two-factor authentication for Android

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

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

Python One-Time Password Library

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

Minimal TOTP generator in 20 lines of Python

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

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

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

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

🔢 better code inputs for react/web

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

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

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.

Two-Factor Authentication for WordPress.

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

A Security Framework for Python applications featuring Authorization (rbac permissions and roles), Authentication (2fa totp), Session Management and an extensive Audit Trail

✅ .NET crypto done right. Professionally audited.