Apache Syncope vs Apereo CAS
A side-by-side comparison of two self-hosted identity & sso options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Apache Syncope | Apereo CAS |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 77 · Good | 93 · 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 | ★ 11,376 |
| First released | 2012 | 2004 |
| Replaces | SailPoint, Okta | Okta, Ping Identity |
What are Apache Syncope and Apereo CAS?
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
Apereo CAS
Apereo CAS is an open-source, enterprise single sign-on solution and identity provider. Widely used in higher education, it supports the CAS protocol along with SAML, OAuth2 and OpenID Connect.
- CAS, SAML, OAuth2 and OIDC protocols
- Multi-factor authentication
- Pluggable authentication handlers
- Delegated and federated authentication
Apache Syncope vs Apereo CAS: key differences
Both projects are written in Java. Apereo CAS is the lighter option, starting around 1,024 MB of RAM against 2,048 MB for Apache Syncope. Apereo CAS is the more established project (first released 2004), while Apache Syncope arrived in 2012. Apereo CAS has the considerably larger community, at 11,376 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 Apereo CAS if…
- Mature SSO with broad protocol support
- Widely adopted in academia
Watch out for
- Configuration is involved
Frequently asked questions
Is Apache Syncope or Apereo CAS better?
Neither is universally better. Apereo CAS has the larger community; both share a hard setup difficulty, so the decision comes down to features and licensing.
Are Apache Syncope and Apereo CAS free and open-source?
Yes. Apache Syncope is licensed under Apache-2.0 and Apereo CAS under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Apache Syncope and Apereo CAS with Docker?
Apache Syncope: yes. Apereo CAS: yes.
Which is lighter on resources, Apache Syncope or Apereo CAS?
Apereo CAS 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.