# 2FAS Auth — open-source two-factor authentication

> Free, open-source authenticator app. Generate TOTP, HOTP and Steam Guard codes on iOS, Android and via browser extensions. No mandatory account, no telemetry, full data ownership.

## Product
- [2FAS Auth — Free, Open-source 2FA Authenticator App](https://2fas.com/auth/): Meet your favourite 2FA app. We are an open-source, community-driven, private and simple solution for Internet's biggest threat - security breaches.
- [2FAS Auth Browser Extension — 2FA for Your Browser](https://2fas.com/auth/browser-extension/): The 2FAS Auth browser extension pairs with your phone to deliver 2FA tokens where you sign in — simple, private, and secure, without leaving the tab.
- [Download 2FAS Authenticator and 2FAS Password Manager](https://2fas.com/download/): Install 2FAS Pass and 2FAS Auth native applications on your mobile devices and extend their capabilities with a browser extension.

## Tutorials & guides
- [How to enable Two-Factor Authentication on your account](https://2fas.com/auth/how-to-enable-2fa/): Learn how to enable 2FA on multitude of popular websites using our easy to follow video tutorials. Use 2FAS app and be a safer Internet user!
- [2FAS Guide Application](https://2fas.com/auth/your-2fa-guide/): Apply for the 2FAS Guide - Simplify 2FA setup for current and future users, and reach 1M active users monthly!
- [Your Branding in 2FAS](https://2fas.com/auth/your-branding/): Elevate your brand to the next level of security and recognition - partner with us and protect your users and customers

## Comparisons
- [2FAS vs Google Authenticator](https://2fas.com/auth/vs/google-authenticator/): Learn how 2FAS Authenticator App compares to Google Authenticator in terms of features and security
- [2FAS vs Authy](https://2fas.com/auth/vs/authy/): Learn how 2FAS Authenticator App compares to Authy in terms of features and security
- [2FAS vs Microsoft Authenticator](https://2fas.com/auth/vs/microsoft-authenticator/): Learn how 2FAS Authenticator App compares to Microsoft Authenticator in terms of features and security
- [2FAS vs Duo](https://2fas.com/auth/vs/duo/): Learn how 2FAS Authenticator App compares to Duo in terms of features and security

## Verify
- [Check the 2FAS Browser Extension magic!](https://2fas.com/auth/check-be/): A simple interactive tool to verify that your 2FAS browser extension and mobile app are paired, connected, and producing 2FA tokens correctly.
- [Check your 2FAS Auth app — QR code](https://2fas.com/auth/check-token/): A simple interactive tool to verify that your 2FAS Auth app is installed correctly. Scan the QR code to generate a test token.

## Legal
- [2FAS Privacy Policy](https://2fas.com/auth/privacy-policy/): The 2FAS privacy policy covering our apps and services: what limited data we process, how we protect it, and your rights.
- [2FAS Auth | End User License Agreement](https://2fas.com/auth/eula/): The 2FAS Auth End User License Agreement — your rights and our obligations covering the mobile authenticator app and the browser extension.
- [2FAS Auth GPL v3](https://2fas.com/auth/gpl-v3/): Learn about GPL v3 License
- [2FAS Auth | Open-source Licenses](https://2fas.com/auth/open-source-licenses/): Full list of open-source licenses used by 2FAS Auth across iOS, Android, the browser extension and the backend API.

## Related machine-readable resources
- [Curated llms.txt (whole site)](https://2fas.com/llms.txt)
- [Full corpus llms-full.txt](https://2fas.com/llms-full.txt)
- [Agent Card](https://2fas.com/.well-known/agent-card.json)
- [Pricing](https://2fas.com/.well-known/pricing.md)
- [Schema Map](https://2fas.com/.well-known/schemamap.xml)