Clerk vs Gluu Server
| Clerk | Gluu Server | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | $1.67/mo | — |
| Open source | No | No |
| Platforms | Android, api, extension, iOS, Web | Linux |
| Free plan | Yes | Yes |
| SSO protocols | SAML, OIDC, OAuth 2.0 | OAuth 2.0, OpenID Connect, SAML 2.0, CAS |
| MFA methods | SMS verification codes, authenticator applications (TOTP), backup codes, passkeys | FIDO 2.0, FIDO U2F, Super Gluu, OTP apps, SMS OTP, Duo Security, certificate authentication |
| Directory sync | Yes | Yes |
| Lifecycle provisioning | Yes | Yes |
| Adaptive access policies | — | Yes |
Both are listed in Best Identity and Access Management Software. On Samsung Mobile US Press, Clerk scores higher on our published basis.