Identity / Auth / User Management

Cerbos vs Clerk

The clearest split between Cerbos and Clerk is vendor lock-in: Cerbos is rated low (OSS core with YAML policies), while Clerk is rated medium. Cerbos is Open-source authorization service with human-readable YAML policies, RBAC/ABAC, and REST/gRPC evaluation endpoints; it fits best for Apps, B2B. Clerk is Drop-in authentication platform with prebuilt React components for sign-in, MFA, organization management, and SSO; it fits best for apps, Startup. Pick Cerbos when the job maps to apps needing sso/mfa; pick Clerk when it maps to next.js / react apps needing drop-in auth ui. Cerbos is not for internal, static projects. Clerk is not for enterprise requiring saml/scim on day one. Honest trade-offs: Cerbos is weak for internal tools with basic auth, and Clerk is weak for enterprise requiring saml/scim on day one — auth0/workos — match to your real scenario. Both sit under the Identity / Auth / User Management umbrella, so your final call depends on pricing transparency, integration effort, and which listed not-for situations you can actually tolerate.