WSO2 Identity Server vs Apereo CAS

WIWSO2 Identity Server9.1Visit Apereo CAS9.0Visit

Higher score WI WSO2 Identity Server #3 in OAuth Server Software 9.1/10 Free plan Free plan✓ 0 of 5 features Visit WSO2

vs

Apereo CAS #4 in OAuth Server Software 9.0/10 Free plan Free plan✓ 5 of 5 features Visit Apereo CAS

• WSO2 Identity Server fits best

  Enterprise self-hosted IAM

• Apereo CAS fits best

  Auditable open-source SSO infrastructure

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Side by side

Feature	WIWSO2 Identity Server 9.1/10 Visit ↗	Apereo CAS 9.0/10 Visit ↗
At a glance
Editor score	9.1	9.0
Ranking	#3 in OAuth Server Software	#4 in OAuth Server Software
Best for	Enterprise self-hosted IAM	Auditable open-source SSO infrastructure
Pricing model	Free	Free
Starting price	Free plan	Free plan
Free plan	✓	✓
Free trial	—	—
Deployment	Self-hosted	Self-hosted
Integrations	5 integrations	13 integrations
Features WSO2 Identity Server 0/5 · Apereo CAS 5/5
OpenID Connect	Not checked yet	✓ (best)
SAML support	Not checked yet	✓ (best)
Self-hosting	Not checked yet	✓ (best)
Token introspection	Not checked yet	✓ (best)
Machine-to-machine auth	Not checked yet	✓ (best)
Specs
Deployment model	Not checked yet	Self_hosted
Our review
Pros	Free open-source deployment for self-hosted identity management Supports OAuth, OpenID Connect, SAML 2.0, MFA, and adaptive authentication Connects LDAP, Active Directory, JDBC, and SCIM 2.0 environments	Supports CAS, SAML, OAuth 2.0, OpenID Connect, REST, and WS-Federation Connects authentication to LDAP, databases, X.509, RADIUS, MongoDB, and more Includes token introspection, machine-to-machine auth, auditing, and monitoring
Cons	Broad feature coverage may require dedicated administration Self-hosted deployment places infrastructure responsibility on the organization Focused on enterprise IAM rather than a narrow OAuth-only use case	Self-hosted deployment requires internal infrastructure ownership Its broad configuration surface may require specialist identity expertise Best suited to organizations able to manage a Java-based identity server
Our verdict	WSO2 Identity Server is an open-source identity and access management product for organizations building customer, workforce, partner, and API access systems. It supports self-hosted deployment and API use, with capabilities spanning… Read the review →	Apereo CAS is an open-source Java server for authentication, authorization, identity management, and single sign-on. It is designed for organizations that need a self-managed identity provider, including enterprise and higher-education… Read the review →

Strengths and trade-offs

• WSO2 Identity Server — where it wins

  • Free open-source deployment for self-hosted identity management
  • Supports OAuth, OpenID Connect, SAML 2.0, MFA, and adaptive authentication
  • Connects LDAP, Active Directory, JDBC, and SCIM 2.0 environments

  Where it doesn't

  • Broad feature coverage may require dedicated administration
  • Self-hosted deployment places infrastructure responsibility on the organization
  • Focused on enterprise IAM rather than a narrow OAuth-only use case

• Apereo CAS — where it wins

  • Supports CAS, SAML, OAuth 2.0, OpenID Connect, REST, and WS-Federation
  • Connects authentication to LDAP, databases, X.509, RADIUS, MongoDB, and more
  • Includes token introspection, machine-to-machine auth, auditing, and monitoring

  Where it doesn't

  • Self-hosted deployment requires internal infrastructure ownership
  • Its broad configuration surface may require specialist identity expertise
  • Best suited to organizations able to manage a Java-based identity server

• WIWSO2 Identity Server9.1/10 · Free plan

  A broad self-hosted IAM platform for enterprise OAuth, OIDC, SAML, and provisioning needs.

  Visit WSO2Full verdict →
• Apereo CAS9.0/10 · Free plan

  A broad, auditable SSO foundation for teams prepared to run identity infrastructure.

  Visit Apereo CASFull verdict →