Apache Syncope vs Keycloak
A side-by-side comparison of two self-hosted identity & sso options — licensing, setup difficulty, resource needs, and what each one replaces.
Keycloak
Open-source identity and access management for modern apps
| Feature | Apache Syncope | Keycloak |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 77 · Good | 99 · Excellent |
| Category | Identity & SSO | Identity & SSO |
| License | Apache-2.0 | Apache-2.0 |
| Language | Java | Java |
| Setup difficulty | Hard | Hard |
| Min. RAM | 2,048 MB | 1,024 MB |
| Deployment | docker, kubernetes, bare-metal | docker, kubernetes, bare-metal |
| GitHub stars | ★ 341 | ★ 36,967 |
| First released | 2012 | 2014 |
| Replaces | SailPoint, Okta | Okta, Auth0, Microsoft Entra ID |
What are Apache Syncope and Keycloak?
Apache Syncope
Apache Syncope is an open-source system for managing digital identities in enterprise environments. It handles identity lifecycle, provisioning, governance and access management with workflow support.
- Identity lifecycle management
- Provisioning to many connected systems
- Workflow-driven approvals
- Reporting and auditing
Keycloak
Keycloak is an enterprise-grade identity and access management solution backed by Red Hat. It provides single sign-on, identity brokering, social login and fine-grained authorization for applications and services.
- SSO with OpenID Connect and SAML 2.0
- Identity brokering and social login
- User federation with LDAP and Active Directory
- Fine-grained authorization services
Apache Syncope vs Keycloak: key differences
Both projects are written in Java. Keycloak is the lighter option, starting around 1,024 MB of RAM against 2,048 MB for Apache Syncope. Apache Syncope is the more established project (first released 2012), while Keycloak arrived in 2014. Keycloak has the considerably larger community, at 36,967 GitHub stars versus 341.
Why pick each one
Choose Apache Syncope if…
- Strong identity governance features
- Standards based
Watch out for
- Complex enterprise-oriented setup
Choose Keycloak if…
- Mature and battle-tested
- Strong enterprise feature set
Watch out for
- Steep learning curve
- Resource intensive
Frequently asked questions
Is Apache Syncope or Keycloak better?
Neither is universally better. Keycloak has the larger community; both share a hard setup difficulty, so the decision comes down to features and licensing.
Are Apache Syncope and Keycloak free and open-source?
Yes. Apache Syncope is licensed under Apache-2.0 and Keycloak under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Apache Syncope and Keycloak with Docker?
Apache Syncope: yes. Keycloak: yes.
Which is lighter on resources, Apache Syncope or Keycloak?
Keycloak has the smaller minimum footprint at 1,024 MB of RAM, compared to about 2,048 MB for Apache Syncope. Real-world usage depends on library size, user count, and enabled features.