Keycloak leads in popularity with 36,125 stars vs 14,329 stars for Logto. The 152% higher star count indicates stronger community adoption. In terms of developer contributions, Keycloak has 8,766 forks, indicating strong developer engagement.

Keycloak and Logto are moving at much the same rate, adding 509 stars and adding 216 stars respectively over the last 30 days (+1.4% vs +1.5%). Neither is pulling away from the other on momentum alone.

Both projects show recent activity, with Keycloak last updated 1 hour ago and Logto 1 hour ago.

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

Keycloak has been in development longer, starting 13 years ago, compared to Logto which began 5 years ago. This 8.1-year head start suggests Keycloak may have more mature features and established processes.

The projects use different licenses: Keycloak is licensed under Apache-2.0 while Logto uses MPL-2.0. Consider the licensing requirements when choosing for your project.

Both tools serve similar use cases in Authentication & SSO. However, they also have distinct specializations: Keycloak also focuses on Authorization & Permissions.

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