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

C++11 HMAC (SHA1/SHA256/SHA512) library with PBKDF2/HKDF, HOTP/TOTP + stateless time tokens, Base32/64/36, zeroizing secure_buffer, CMake package and MQL5 support.

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

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.

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

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

Minimal Free Pascal implementation of TOTP and HOTP algorithms using SHA1 and SHA256. Supports both time-based and counter-based OTP generation.

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

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

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

Generates TOTP tokens in the browser

Java implementation of TOTP

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

OTPLib Delphi Library

Get TOTP Codes from Ente Auth using Raycast

Cross-platform desktop application for generating TOTP codes