Which one should I pick for a new project?

I can only answer questions about cymcsg/ultimaterecyclerview or keycloak/keycloak.

That said, these are two very different projects serving different purposes, so the choice depends entirely on your project's needs:

cymcsg/ultimaterecyclerview is an Android UI library for building advanced list/grid views with features like pull-to-refresh, infinite scrolling, animations, and drag-and-drop. Pick this if you're building an Android app that needs a sophisticated RecyclerView component.

keycloak/keycloak is an open-source identity and access management (IAM) platform for authentication and authorization. Pick this if you're building backend systems that need user management, single sign-on (SSO), or role-based access control.

RepoPilot verdict on health: Both projects score well — ultimaterecyclerview rates "GO — Healthy across the board," and keycloak is a mature, widely-adopted project (the ADOPTERS list shows Fortune 500 companies and major institutions using it).

Choose based on your actual problem: Do you need Android UI components, or do you need identity management infrastructure?

FOLLOW_UPS:

• What type of application are you building?
• Do you need authentication/authorization features?
• Are you targeting Android or backend systems?