Scenario 01
If you are building a React or Next.js SaaS app and want drop-in UI components…
Clerk has the most complete pre-built components and B2B organization management.
Comparison: Auth0 (Okta) vs. Developer-first (Clerk, Supabase Auth)
Auth0 vs. Clerk vs. Supabase Auth: choosing an identity platform
Compare Auth0's broad enterprise feature set, Clerk's pre-built components and B2B organizations, and Supabase Auth's tight integration with PostgreSQL.
Decision framework
Which one fits your situation
Scenario 02
If you already use Supabase and want auth tied to Row Level Security…
Supabase Auth integrates directly with PostgreSQL RLS.
Scenario 03
If you need deep enterprise identity features such as LDAP or Active Directory connections…
Auth0 covers the widest range of enterprise identity protocols.
Trade-offs
Side by side
How the two options compare on the dimensions that usually decide this choice.
| Dimension | Auth0 (Okta) | Developer-first (Clerk, Supabase Auth) | Verdict |
|---|---|---|---|
| Frontend integration | Hosted Universal Login, or custom forms built on the SDKs | Pre-built React components (sign-in, user profile, organization switcher) | Clerk is the quickest to integrate in React |
| Enterprise SSO pricing | Enterprise SSO is priced into B2B plan tiers | SAML SSO available on self-serve paid plans | Compare total cost at your expected number of SSO connections |
| Database integration | External user store, synced to your database with webhooks or actions | Users in a PostgreSQL auth schema (Supabase); webhooks for Clerk | Supabase gives direct SQL access to auth data |
Questions
Frequently asked questions
Organizations are built in: member invitations, roles and per-organization SAML connections, with UI components for each.
Usually. All three can import common password hashes such as bcrypt, so users keep their passwords. Check which hash algorithm your current provider uses before planning the cutover.
Talk the decision through with an engineer
Share your constraints — team, traffic, budget, compliance. We'll reply within one business day, and the call is about your decision, not our preferred stack.