Why consider switching
- Operational burden — upgrades, clustering, and database tuning consume engineering time
- Theming + UX customization in Keycloak is painful relative to modern alternatives
- You want a managed service to stop owning the auth infrastructure
- B2B enterprise-SSO-by-default needs that Keycloak makes you build by hand
Why staying may be right
- Zero license cost and full data control — nothing leaves your infrastructure
- Mature, standards-complete (OIDC, SAML, OAuth) with a huge community
- No per-MAU pricing — economics stay flat as you scale
- Already deployed and operationally understood by your team
Top Keycloak alternatives, side by side.
- 1.
Authentik
Modern OSS IdPKeycloak-class capability with markedly better admin UX and theming; Python-based, container-native.
Best for
Teams that want self-hosted OSS but find Keycloak's ergonomics painful.
Trade-off
Smaller community and ecosystem than Keycloak; younger project.
- 2.
Ory (Kratos / Hydra / Keto)
Composable OSS identityAPI-first, composable identity primitives — bring only the pieces you need (authN, OAuth server, authZ).
Best for
Engineering teams wanting headless, composable building blocks over a monolith.
Trade-off
More assembly required; you build the UX layer yourself.
- 3.
Zitadel
OSS + managed cloud IdPModern OSS IdP with a managed-cloud option and B2B multi-tenancy built in; eventsourced architecture.
Best for
Teams wanting the OSS-or-managed choice with native multi-tenant B2B.
Trade-off
Smaller ecosystem; fewer pre-built integrations than incumbents.
- 4.
WorkOS
B2B enterprise-SSO-as-a-serviceStops you hand-building SAML/SCIM for enterprise customers; enterprise-readiness as an API.
Best for
B2B SaaS that adopted Keycloak only to satisfy enterprise SSO requirements.
Trade-off
Not a full self-hosted IdP replacement; managed + per-connection pricing.
- 5.
Auth0 (Okta CIC)
Managed CIAMFully managed, deep extensibility (Actions), broad protocol + social support.
→ Read our Auth0 (Okta CIC) deep diveBest for
Teams ready to stop self-hosting and accept per-MAU pricing for zero ops.
Trade-off
2026 pricing reset hit sub-enterprise tiers; cost grows with MAU.
How to pick the right alternative for your environment.
1. Is self-hosting cost (ops time) the actual pain?
If yes and you want to stay OSS, Authentik/Zitadel cut the ergonomics cost; if you want out of ops entirely, go managed (Auth0).
2. Did you deploy Keycloak only for enterprise SSO?
If the driver was B2B SAML/SCIM, WorkOS removes that specific burden without replacing your whole stack.
3. Do you need full data residency / zero per-MAU cost?
If yes, stay OSS — the managed options reintroduce per-MAU pricing and data egress.
We run vendor-neutral selections + bake-offs.
From RFP to shortlist to bake-off to contract — we’ve seen every vendor pitch + every contract structure across the IAM ecosystem.