The Best Open-Source Alternatives to ForgeRock
Are you looking for a free or self-hosted alternative to ForgeRock? In 2026, avoiding expensive proprietary software subscriptions is easier than ever. The open-source community has built excellent privacy-friendly tools within the Authentication ecosystem. Currently, there are 4 active replacements available, with Keycloak being one of the most prominent selections.
Quick Comparison: ForgeRock vs. Open Source
Full comparison: ForgeRock vs. Keycloak ā| Criteria | ForgeRock | OSS Replacements |
|---|---|---|
| Pricing model | Paid / Monthly Fees | 100% Free / Self-Hosted |
| Data Control | Third-party Servers | Full Ownership & Privacy |
| Customizability | Restricted by Vendor | Unlimited (Modify Codebase) |
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Keycloak
Keycloak is an open-source identity, access management, and single sign-on (SSO) solution that provides secure authentication, authorization, and user management, serving as a robust alternative to commercial platforms like ForgeRock for organizations prioritizing privacy and control over their user data. By leveraging Keycloak, developers can create seamless, secure user experiences while maintaining complete ownership of their users' information.
Cas Server
Cas Server is an open-source, highly customizable single sign-on (SSO) solution that enables secure authentication and authorization for users across multiple applications and domains, providing a robust, scalable alternative to proprietary solutions like ForgeRock. With its extensive feature set and strong focus on user identity control, Cas Server empowers organizations to take ownership of their authentication processes while prioritizing data privacy and security.
Gluu is a comprehensive, open-source identity and access management (IAM) platform that secures user identities and simplifies authentication across multiple applications and services, providing a flexible and cost-effective alternative to proprietary solutions like ForgeRock. Powered by its core component oxAuth, Gluu offers robust scalability, fine-grained access controls, and a strong focus on user data privacy, making it an attractive choice for organizations seeking a secure and transparent IAM solution.
Gluu - a comprehensive, open-source identity and access management platform that empowers organizations to seamlessly manage user identities, authentication, and authorization while prioritizing user data sovereignty and security. By offering a flexible, customizable alternative to proprietary solutions like ForgeRock, Gluu provides a privacy-friendly, community-driven approach to identity management that fosters trust and transparency.
Frequently Asked Questions
What is the best open source alternative to ForgeRock?
Based on GitHub community data (including star count and fork activity), Keycloak stands out as one of the most reliable open-source replacements for ForgeRock today.
Why should I use an open-source replacement instead of ForgeRock?
Switching to an open-source solution ensures complete data sovereignty, protects your software environment from sudden vendor price hikes, and gives you full transparent control over your tech-stack metadata.