Self-hosted multi-factor authentication server supporting OTP, passkeys/FIDO2, push, SMS and smartcards, integrating with AD, LDAP and SQL user stores.
1.8K371PythonAGPL-3.0Updated 21 hours ago
1 alternative
Best open-source alternatives to Duo Security (2026)
Looking for a free, open-source alternative to Duo Security? These 1 projects can replace it. Each one passed our quality screening and is explained in plain words, so you can compare stars, license and maintenance at a glance.
Quick comparison
| Project | Stars | License | Last commit |
|---|---|---|---|
| privacyidea/privacyidea | ★ 1.8K | AGPL-3.0 | 21 hours ago |
FAQ
- Is there a free, open-source alternative to Duo Security?
- Yes. The most popular open-source alternatives to Duo Security on Repolode are privacyidea.
- Which Duo Security alternative should I choose?
- privacyidea has the most GitHub stars and is released under AGPL-3.0. Compare the license and last commit of each option in the table above before choosing.