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A serverless progressive web application that generates TOTP and HOTP codes, enabling robust two-factor authentication (2FA) directly within your browser. Powered by Nuxt 4, NuxtHub, NuxtUI 3, Cloudflare Pages, D1 Database, and Drizzle ORM.
HOTP/TOTP one time passwords on java phones (J2ME)
HMAC Based One Time Passwords in PHP. RFC4226 and RFC6238 compliant.
Nextcloud app that allows you to manage your OTP (TOTP/HOTP) codes easily
Nextcloud app that allows you to manage your OTP (TOTP/HOTP) codes easily
Similar to the Google authenticator just written in Python to automate annoying two factor authentication.
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.
Go library for one-time passwords, supports HOPT and TOPT (Google Authenticator compatible)
A simple, easy-to-use one-time password generator implementation for .NET Core 3.1. Compatible with Google Authenticator.
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.
A Swift library that provides cryptographic authentication algorithms like OCRA, HOTP etc.
Kotlin Multiplatform library for OTP and TOTP password generation/validation
HMAC-based one-time password generator. https://www.nuget.org/packages/sim756.HOTP
Authenticator app with Python.
Lightweight TypeScript HOTP/TOTP library
OTPLib Delphi Library
OTPLib OTP Library
Generate password for any site, with only a master password, a site name, a login and a counter using Lesspass algorithm. Generate TOTP or HOTP too.