WorkOS
Enterprise-ready auth, SSO and SCIM APIs for B2B SaaS
Alternatives
Choose keycloak if…
- you need a free, open‑source solution you can host yourself
- you must integrate with existing LDAP or Active Directory
- you want full control over custom auth scripts and policies
- you prefer to avoid per‑auth SaaS pricing
Choose FusionAuth if…
- you need to host the auth server behind a firewall
- you want a ready‑made user registration and passwordless UI
- you must support dozens of social login providers without
- you require full data sovereignty for compliance
Choose Auth0 if…
- you need built‑in multi‑factor authentication
- you require role‑based access control in the same service
- you want a fully customizable login page without extra code
- you prefer a single paid subscription over a
Choose Stytch if…
- you need passwordless login (magic links, biometrics, SMS)
- you need real‑time fraud risk scoring
- you want a single API for both SSO and passwordless
- you prefer out‑of‑the‑box multi‑factor options
How to Decide
WorkOS is known for its enterprise‑ready authentication, SSO and SCIM APIs that power B2B SaaS product teams. The alternatives split into a few clear camps: Keycloak leans on a fully open‑source, self‑hosted deployment model with built‑in multi‑tenant realms; FusionAuth emphasizes a developer‑friendly platform with a generous freemium tier and optional self‑hosted Docker image; Stytch focuses on passwordless login and built‑in fraud‑prevention APIs delivered via a cloud SaaS service.
When comparing these options, the most decisive factors are the deployment model (cloud SaaS versus self‑hosted/on‑prem), the licensing approach (proprietary vs open‑source), the pricing structure and how costs scale with authentication volume, and the specialized authentication capabilities each offers (e.g., full SSO protocol support versus passwordless and fraud‑detection features). These dimensions directly reflect the concrete differences highlighted in WorkOS and its alternatives.
All Alternatives
“SaaS identity platform with full SSO, OAuth2/OIDC support and extensive integrations, often compared with Keycloak.”
“WorkOS offers enterprise‑grade auth, SSO and SCIM APIs for B2B SaaS, overlapping FusionAuth’s target market and feature set.”
“WorkOS provides enterprise‑grade auth, SSO and SCIM APIs designed for B2B SaaS, a direct functional alternative to Auth0.”
“WorkOS delivers enterprise‑grade auth, SSO and SCIM APIs for SaaS products, matching Stytch's core use case.”
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