The Best Open-Source Alternatives to OneLogin
Are you looking for a free or self-hosted alternative to OneLogin? 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 1 active replacements available, with Keycloak being one of the most prominent selections.
Quick Comparison: OneLogin vs. Open Source
| Criteria | OneLogin | 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 and access management solution that securely authenticates users, provides role-based authorization, and simplifies application integration through its robust RESTful API and OpenID Connect adapters, offering a highly customizable alternative to cloud-based solutions like OneLogin. With Keycloak, organizations can maintain control and data ownership, ensuring enhanced privacy and security for their users.
Frequently Asked Questions
What is the best open source alternative to OneLogin?
Based on GitHub community data (including star count and fork activity), Keycloak stands out as one of the most reliable open-source replacements for OneLogin today.
Why should I use an open-source replacement instead of OneLogin?
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.