A secure, privacy-focused command-line tool for two-factor authentication (2FA) with support for QR code scanning

Cross-platform console C#/.Net implementation to generate one time passwords (TOTP/HOTP) for open authentication defined by standard RFC's (4226, 6238). Compatible with Google/Microsoft Authenticator apps.

a tiny-mfa implementation written in go

Online One Time Password (HOTP/TOTP) generator.

Secure your online accounts with Open Authenticator : a free, open-source and lovely-crafted TOTP manager.

🍱 Collection of carefully crafted TypeScript standalone libraries. Minimal, unbloated, convenient.

Implementation of TOTP code generator in Bash.

This Go package provides implementations for One-Time Password (OTP) systems, including TOTP (Time-Based One-Time Password), HOTP (HMAC-Based One-Time Password), and OCRA (OATH Challenge-Response Algorithm). It offers a secure, flexible, and easy-to-use solution for enhancing user authentication.

trivial implementation of TOTP in javascript using the browser's crypto API

Similar to the Google authenticator just written in Python to automate annoying two factor authentication.

Python script to dump 2fa pin from Android FreeOTPPlus (FreeOTP+) export file freeotp-backup.json

Time-based one-time password generator

An authenticator implementing RFC 6238, utilizing the OpenSSL library to encrypt secrets for cross-machine usage.

Small arduino-compatible secure TOTP 2FA generator (hardware part)

a browser extension to manage TOTP(Time-based One Time Password) keys

Tau is an authenticator application that generates time-based one-time password (TOTP).

Open-source TOTP (Time-based One Time Password) Viewer.

A serverless web application that generates TOTP and HOTP codes, enabling robust two-factor authentication (2FA) directly within your browser. Powered by Nuxt 3, NuxtHub, Cloudflare Pages, D1 Database, and Drizzle ORM.

TOTPUtil is a Node.js utility class for generating and verifying Time-based One-Time Passwords (TOTP) for two-factor authentication (2FA).

Simple Go package to implement TOTP authentication functionality to the Go app. It supports ECDH as well.