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The 10 Best Free and Open-Source Identity Management Tools

4 Different Authentication Models (And How They Can Help)

The 10 Best Free and Open Source Identity Management Tools

What are the 10 best free and open-source identity management tools for your enterprise?

Identity and access management must form the core of your cybersecurity policies and platforms. Securing credentials and verifying users can help deflect and prevent an overwhelming majority of data breaches. Indeed, IAM forms the modern enterprise’s digital perimeter; strong authentication protocols alone can help keep digital assets secure and keeps external and internal threat actors out.

Thus, your business needs a strong IAM solution. However, small-to-medium businesses may find selecting a full-fledged IAM solution too costly in time and resources. Additionally, enterprises still seeking a solution can benefit from a free identity security tool.

Thus we’ve compiled a list of the 10 best free and open-source identity management tools available for businesses. Again, you should not consider these tools as substitutes for a full-fledged identity solution; they can’t provide the necessary identity governance or privileged access management necessary for cybersecurity.

However, they are certainly powerful and capable in their own right. Here are the free and open-source tools in no particular order:  

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The 10 Best Free and Open Source Identity Management Tools


This stands as perhaps one of the most well-known open-source identity management tools; it features Single Sign-On, user and group management, flexible authentication, and automated provisioning—a major component of identity governance and administration. Moreover, OpenIAM aims to help reduce enterprise operational costs and improve identity audits via a centralized control station. The community version doesn’t enforce a time limit on subscriptions and benefits from community forum support.

Finally, there are different tools for different enterprise identity management needs, including OpenAM and OpenIG.  

Check out this open-source access management tool here.

Apache Syncope

The Apache Syncope platform describes itself as an open-source system managing digital identities in enterprise environments; it rarely gets more straightforward. Apache Syncope focuses on providing identity lifecycle management, identity storage, provisioning engines, and access management capabilities. Furthermore, it even offers some monitoring and security capabilities for third-party applications.

Check out this open-source access management tool here.

Shibboleth Consortium

Another of the more widely known identity open-source identity management tools, Shibboleth Consortium offers their Identity Provider; this tool offers web Single Sign-On, authentication, and user data aggregation. Additionally, Shibboleth can enforce your identity management policies on user authentication requests and implement fine-grain controls. It can even scale with your enterprise’s growth right out of the box.

Moreover, the Consortium also provides a service provider and a metadata aggregator as deployable business products.

Check out this open-source access management tool here.

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Significantly, the WSO2 Identity Service stands as one of the few open-source identity management tools providing CIAM capabilities. For businesses interested in CIAM, WSO2  advertises lower-friction access for customers, data gathering for business intelligence, and streamlined preference management.

Further, the WSO2 Identity Service offers API and microservices security, access control, account management, identity provisioning, identity bridging, and analytics.

Check out this open-source access management tool here.


Midpoint, an open-source IAM tool from Evolveum, seeks to combine identity management and identity governance. Indeed, MidPoint aims to provide scalability, allowing enterprises to grow to accommodate millions of users; it also seeks to offer diverse customization.

Additionally, Midpoint offers an auditing feature—which can even evaluate role catalogs— as well as compliance fulfillment. Its compliance capabilities can even help your enterprise with strict identity regulations such as the EU’s GDPR. The MidPoint solution works for enterprises of all sizes but has features designed for the financial, governmental, and educational industries.

Check out this open-source access management tool here.


Like many open-source identity management tools, Soffid offers Single Sign-On and identity management at the enterprise level. In addition, it aims to reduce your IAM support costs and assist with auditing and legal compliance. Critically, Soffid also aims to facilitate mobile device usage through self-service portals.

In the realm of identity governance and administration, Soffid also offers identity provisioning, workflow features, reporting, and a unified directory. It also provides enterprise-wide role management through predefined risk levels.

Check out this open-source access management tool here.


Open-source identity management tools aim to keep your cybersecurity platforms together. Thus, Gluu’s name proves remarkably appropriate. Among its features, Gluu offers an authorization server for web & API access management. Also, it provides a directory for identity data storage, authentication middleware for inbound identities, two-factor authentication, and directory integration.

Check out this open-source access management tool here.


Uniquely among the open-source identity management tools listed here, Keycloak positions its design as primarily for applications and services.

The emphasis on third-party application identity security enables your enterprise to monitor and secure third-party programs with little coding. Yet Keycloak also provides out-of-the-box user authentication and federation. Furthermore, it provides standard protocols, centralized management, password policies, and even social login for CIAM needs.

Check out this open-source access management tool here.


Perhaps a little more esoteric than the other open-source identity management tools listed here, FreeIPA works to manage Linux users particularly. Additionally, it can assist in monitoring and securing digital identity in MIT Kerberos and UNIX networked environments. To this end, FreeIPA provides centralized authentication and authorization through user data storage. Finally, it also offers a web interface and command-line administration tools.

Check out this open-source access management tool here.

Central Authentication Service (CAS)

The last entry on our list of open-source identity management tools, the CAS offers Single Sign-On for the web. However, it offers so much more: an open-source Java server component, support for multiple protocols, diverse integration capabilities, community documentation, and implementation support. CAS also offers session and user authentication process  

Check out this open-source access management tool here.

If you would like a more fully-fledged identity and access management solution for your business, be sure to check out our Identity Management Buyer’s Guide. In it, we compile data on the top vendors in the identity security field and provide a Bottom Line for each. Also, check out the Solutions Suggestion Engine

NOW READ: 19 Best Password Managers for Users and Businesses: The Definitive List

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