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

A cli-based pass-backed TOTP app.

A generator for counter- and time based authentication codes (RFC-4226/RFC-6238, Google Authenticator).

A high-performance, zero-dependency Go package for generating and validating TOTP, HOTP and OCRA one-time passwords — RFC 4226, RFC 6238 and RFC 6287 compliant.

RFC 6238 code generator compatible with Google Authenticator

An implementation of the One-Time Password (OTP) algorithm in Dart.

Argus is an OTP Mobile App and support the Time-based One-time Password (TOTP) algorithm specified in RFC 6238.

Node.js One-Time Password

Simple but Secure Generic OTP, OCRA (RFC6287), TOTP (RFC6238) & HOTP (RFC4226) solution!

A hardware token that works with the two-factor authentication for GitHub, Google, Facebook, and so on.

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.

[Completed] TOTP implemented with RFC2104, RFC3174, RFC4226, RFC6234, RFC6238

Utility to provide automatic config generation for cisco any connect with enabled rfc6238 TOTP: Time-Based One-Time Password Algorithm

A CSharp implementation of the Time-Based One Time Password (TOTP) algorithm (RFC6238). Works with Google Authenticator.

Modern .NET library for TOTP (RFC6238)

OTPLib Delphi Library

🔐 Tiny & lightweight RFC 4226 & RFC 6238 compliant one-time password (HOTP/TOTP) generation & validation library for Java

Totp util base on rfc6238 for two step authentication

Python-based RFC6238 implementation that supports Steam Authenticator encoding

Securely manage TOTPs locally in your terminal