2 posts tagged with "auth0"

Keycloak vs. Auth0: Choosing an Open-Source Alternative for Authentication​

Last updated: 2026 — pricing and feature comparisons reflect Auth0's current published plans.

When it comes to implementing authentication and authorization in web applications, Auth0 and Keycloak are two prominent solutions that offer robust security features. Auth0 is a popular, fully managed cloud platform; Keycloak is an open-source alternative that competes strongly on cost, control, and flexibility. This post compares the two across cost of ownership, architecture and deployment, maintenance, functionality, and support — and explains why pairing Keycloak with a managed host like Phase Two often gives you the best of both.

In today's digital landscape, managing user identities and securing access to applications and services is paramount for businesses of all sizes. As the demand for robust identity and access management (IAM) solutions grows, so does the market, with various commercial options vying for attention. When we first started using Keycloak over 7 years ago, we were surprised that there was a relatively unknown, but completely open-source alternative to commercial offerings in the Identity and Access Management market.