Two Factor Authentication GitHub Repositories (2026) · Open Source Tools

The Single Sign-On Multi-Factor portal for web apps. OpenID Certified™ and Post-Quantum Cryptography Ready.

The missing reverse proxy for ssh scp

One Time Password (OTP) / 2FA for Node.js and Browser - Supports HOTP, TOTP and Google Authenticator

A Web app to manage your Two-Factor Authentication (2FA) accounts and generate their security codes

🔒 Keycloak Authentication Provider implementation to get a two factor authentication with a OTP/code/token send via Email (SMTP, SendGrid, AWS SES, Mailgun)

📱 Two-Factor Authentication (2FA) client for Android + Wear OS

WebAuthn ruby server library ― Make your Ruby/Rails web server become a conformant WebAuthn Relying Party

A one-time password (HOTP/TOTP) library for Java

A Jellyfin plugin that adds native two-factor authentication (TOTP, email OTP) with trusted device tokens, TV device pairing, LAN bypass, and API key bypass. Server-side enforcement — works with all clients including web, mobile, TV, and service integrations like Sonarr/Radarr.

Vonage Server SDK for Java. API support for SMS, Messages, Voice, Text-to-Speech, Numbers, Verify (2FA), Video and more.

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