OpenOTP Authentication Server vs privacyIDEA

OpenOTP Authentication Server

Figure	OpenOTP Authentication Server	privacyIDEA
Price from	Free	€165/mo
Free plan	Yes	—
Free trial	Yes	—
Open source	—	—
Web	Yes	Yes
Windows	Yes	Yes
macOS	Yes	—
Linux	Yes	Yes
iOS	Yes	Yes
Android	Yes	Yes
API	Yes	Yes
Self-hosted	Yes	Yes
Plans published	7	3
Spec score · Multi-Factor Authentication APIs	8.0 (#12)	7.8 (#13)
Authentication methods	Listed methods include mobile push, FIDO2/passkeys, YubiKey, OATH tokens, SMS, email, printed OTP lists, and PKI certificate authentication.	Supported token types include passkeys and WebAuthn, push, HOTP/TOTP, email and SMS OTP, U2F, YubiKey, SSH keys, and X.509 certificates.
Deployment	OpenOTP is offered for on-premise installation and as a cloud/SaaS service.	The project provides source code on GitHub and installation through PyPI; its downloads page recommends pip for Debian and other Linux distributions.
Headquarters	Esch-sur-Alzette, Luxembourg	Kassel, Germany
Purpose	OpenOTP is an MFA server with OTP and FIDO2 for securing user network access.	privacyIDEA is a modular authentication server for adding two-factor authentication to applications, VPNs, remote access, SSH, websites, and web portals.
Support	The feature table lists SLA and support services as optional, and RCDevs links to product documentation and community forums.	NetKnights Enterprise Edition includes professional support and service level agreements, and its support contract runs for one year.

OpenOTP Authentication Server has no write-up on Specifiction yet; its figures are above.

privacyIDEA has no write-up on Specifiction yet; its figures are above.