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

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

🎲TOTP(Time-based one-time password) generator, support for Google Authenticator

Javascript One-Time Password module.

Nextcloud app that allows you to manage your OTP (TOTP/HOTP) codes easily

A simple Javascript HOTP implementation (HMAC-Based One-Time Password Algorithm) as described in RFC 4226. The library relies on crypto-js (http://code.google.com/p/crypto-js/) for the javascript HMAC-SHA1 implementation.

An example website of Yubikeys and HOTP using webusb

Garena Authenticator

Two-factor authenticator(2FA) desktop client on MacOS/Linux/Windows/Darwin

A GNOME Shell extension to generate Time-based One-Time Passwords (TOTP aka Time-based OTP) for websites that use 2FA.

Open source version of dynamic password verifier WeChat mini program, supporting TOTP, HOTP algorithm ordinary QR code, and Google Authenticator otpauth-migration QR code for two-factor authentication (2FA)

Simple OTP implementation in node.js according to rfc 4996 and rfc 6238

OCRA: OATH Challenge-Response Algorithm implementation in Javascript

A telegram bot, which issues TOTP codes for two-factor authentication

A simple cryptography library for NGN

Generic 2FA OTP generator (OATH/HOTP, OATH/TOTP, mOTP)

js version paycode generator

One time password plugin for eggjs.

A website that converts Duo codes to HOTP

Totp util base on rfc6238 for two step authentication