Provides lightweight implementations for the HOTP and TOTP two factor authentication protocol.

Simple ways to help keep your digital life secure.

Enables multi-factor authentication (MFA) for .NET Framework applications. Supported authentication methods: WebAuthn/U2F Security Keys, Mobile Push, Mobile Passcodes (TOTP), SMS Passcodes, Email Links.

Put a face and name to the number that texts you 6 digits when you try to login.

Laravel two factor authentication

Two step verification integration in laravel by using SMS

A two-factor authentication(2FA) based on HOTP & TOTP written in TypeScript.

The one and only Two Factor Authentication Handler for Express.

Legacy version of the Authy Desktop two-factor identification code management program.

A Spigot plugin that adds 2FA to Minecraft servers

A Nexmo library for Golang

bi-directional 2FA prototype

A library & application, for server side 2FA verify

Example project, showing how to authenticate against privacyIDEA using WebAuthn

Two-factor authentication package for Laravel 7.x, 8.x

A 2FA cross-platform application.

🔐 API for completing Duo two-factor challenges (mirror)

This is a custom 2FA (Two-Factor Authentication) middleware for the Fiber web framework. It provides a secure and easy-to-use solution for implementing 2FA in Fiber applications. The middleware supports TOTP (Time-based One-Time Password) authentication and offers customizable configuration options.

Generate OATH-TOTP one-time passwords from the command line