Best authentication & identity for 2026
Sign-in, user management, SSO, SCIM, MFA. Build it yourself only if your auth IS your product. Otherwise the right call is buy — your CTO has better things to do than rotate refresh tokens.
What to look for
The four questions that actually decide a authentication & identity pick — once you answer these, the rest is feature-list noise.
- ✓Time-to-first-sign-in from npm install
- ✓SSO/SAML support (mandatory for enterprise plans)
- ✓Free-tier MAU ceiling
- ✓Session security defaults (cookie flags, CSRF, refresh rotation)
All authentication & identity we cover
Click through for the full review — pricing, alternatives, comparisons.
WorkOS
Enterprise-readiness platform: SSO, SCIM, audit logs, directory sync. Built for SaaS shipping enterprise plans. Pay-per-connection pricing.
Stytch
Passwordless auth — magic links, OTP, biometrics, session management. Generous free tier; usage-based scaling. Stronger consumer-app fit than Clerk for high-MAU.
Clerk
Drop-in auth + user management for Next.js, React, Remix. Free up to 10K MAUs. The ergonomic choice when you do not want to build sign-in/up flows yourself.
Auth0
Okta-owned identity platform. Enterprise-grade SSO, MFA, RBAC. The default when you need SAML/SCIM and an audit trail your customer's security team will sign off.