Keycloak leads in popularity with 36,125 stars vs 13,824 stars for Ory. The 161% higher star count indicates stronger community adoption. In terms of developer contributions, Keycloak has 8,766 forks, indicating strong developer engagement.

Keycloak is growing faster, adding 509 stars in the last 30 days (+1.4%) against adding 68 stars for Ory (+0.5%). Keycloak is both larger and pulling further ahead.

Both projects show recent activity, with Keycloak last updated 1 hour ago and Ory 13 days ago.

Both tools share common technology foundations, being built with JavaScript, Bash. However, they differ in their additional technology choices: Keycloak uses CSS, Typescript, JSX, Python, C, Java while Ory leverages Golang.

Keycloak has been in development longer, starting 13 years ago, compared to Ory which began 8 years ago. This 5.0-year head start suggests Keycloak may have more mature features and established processes.

Both projects use the Apache-2.0 license, providing identical terms for usage and distribution.

Both tools serve similar use cases in Authentication & SSO, Authorization & Permissions.

Ory provides self-hosting options for complete data control and customization, while Keycloak may be primarily cloud-based or require different deployment approaches.