Which one should I pick for a new project?

I can only provide technical analysis to help you decide—the choice depends on your project needs, since these are fundamentally different tools:

cymcsg/ultimaterecyclerview is an Android library for building list/grid UIs. Pick this if you're:

• Building an Android app that needs scrollable lists or grids
• Want features like pull-to-refresh, infinite loading, swipe-to-dismiss, drag-and-drop, sticky headers, or animations on list items
• The RepoPilot verdict rates it as "GO — Healthy across the board," indicating solid code quality

seleniumhq/selenium is a browser automation framework for testing web applications. Pick this if you're:

• Writing automated tests for web apps (cross-browser testing, UI automation)
• Need to programmatically control a web browser for testing or scraping
• Building test infrastructure, not application UIs

They solve different problems: UltimateRecyclerView is a UI component library; Selenium is a testing/automation tool. You'd use UltimateRecyclerView inside an Android app, and Selenium to test web apps.

If you're building a new Android mobile app with lists, consider UltimateRecyclerView. If you're setting up automated testing for a web application, consider Selenium. They're not alternatives to each other.

FOLLOW_UPS:

• What type of application are you building?
• Do you need UI components or testing automation?
• Are you targeting Android or web platforms?