Open source 2fa projects
Every project in the registry tagged 2fa, ranked by real GitHub adoption.
Zero-config VPN with WireGuard for secure networking
Secure, private photo storage and sharing solution
The Single Sign-On Multi-Factor portal for web apps. OpenID Certified™ and Post-Quantum Cryptography Ready.
Secure, customizable identity infrastructure for developers
2FA token manager for Android with encrypted vault
The tiniest OpenID Certified™ authorization and authentication server you have ever seen.
One Time Password (OTP) / 2FA for Node.js and Browser - Supports HOTP, TOTP and Google Authenticator
Managed identity and access management for any app
:closed_lock_with_key: multi factor authentication system (2FA, MFA, OTP, FIDO Server)
WebAuthn ruby server library ― Make your Ruby/Rails web server become a conformant WebAuthn Relying Party
Related tags
Frequently asked questions
How many open source 2fa projects are there?
This registry tracks 11 projects tagged 2fa, with 151,254 GitHub stars between them. The most-adopted is Tailscale at 38,497 stars.
Are these 2fa projects free to use?
Yes — 11 of the 11 carry an explicit open-source licence across 5 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which 2fa project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these 2fa projects still maintained?
11 of the 11 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.