Trustworthy, encrypted, command-line TOTP/HOTP authenticator app with import functionality.

Time-Based One-Time Password (TOTP) and HMAC-Based One-Time Password (HOTP) library for Go.

web service and api with free phone numbers from various providers in one place

Generate TOTP secrets and codes to use while making and testing software secured by TOTP MFA/2FA.

jCat One Time Password Manager

HMAC SHA1/SHA256/SHA512 in modern C++11. Includes time tokens and MetaTrader (MQL5) support | Библиотека HMAC для C++ и MQL5: поддержка SHA1, SHA256, SHA512 и токенов по времени

A TOTP code generator for the CLI that securely stores secrets in the keychain

TOTP & HOTP. SHA1 & SHA256. Time based or counter based. Minimal implementation for FPC.

A time-base one time password generator for Mac (TOTP)

Python script to dump 2fa pin from Android FreeOTPPlus (FreeOTP+) export file freeotp-backup.json

Command line Google Authenticator alternative. Or, Command line Script for managing 2FAs.

Local TOTP Generator is an offline tool for generating time-based one-time passwords (TOTPs) using the Web Crypto API. With customizable settings for digit length, period, and algorithm, it's perfect for secure 2FA testing, temporary access setups, and quick authentications without compromising your secret key.

Web-App to share TOTP with a group of people.

🔑 Command-line tool for managing Time-based One-Time Passwords (TOTPs).

Java implementation of TOTP

Operation system for boards. The Operating System allows you to use the board as a security key.

Cross-platform desktop application for generating TOTP codes

Time based OTP (TOTP) generation for 2-factor authentication like Google Authenticator without backend

Debugging tool for time-based one-time password (TOTP).

Implementation of HOTP and TOTP as per the RFC RFC4226 and RFC6238 respectively