**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.

Two Factor Authentication

🎲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

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

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

A browser extension to retrieve 2FA security codes generated from your 2FAuth server

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

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

OCRA: OATH Challenge-Response Algorithm implementation in Javascript

A simple cryptography library for NGN

js version paycode generator

One time password plugin for eggjs.

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