Best Open Source 2FA Authentication in 2026
Tools for implementing two-factor authentication to add an extra layer of security to user accounts and logins.
The most popular pick this year is Ente with 26,365 GitHub stars, but all 2 options below are worth considering depending on your needs.
2 open source 2fa authentication — ranked by GitHub stars. Browse all
Ente
🔒 End-to-end encrypted cloud for photos, videos and 2FA secrets.
Google Authenticator
Open Authenticator
Free, open-source cross-platform TOTP authenticator with self-hostable sync backend, built with Flutter.
Google AuthenticatorHow we rank these tools
Tools are ranked by GitHub stars as a proxy for community adoption and trust. Stars reflect how many developers found a project valuable enough to bookmark — a reasonable signal for quality in the open source world. We only list tools that are actively maintained and open source.
Looking for tools you can run yourself? Browse self-hosted 2fa authentication →