UAT is the final phase in the software testing life cycle to validate that the software product meets the user needs.Key features to consider in UAT testing tools: ease of use, collaboration, test case management, integration, and reporting.Top UAT testing tools include TestRail, PractiTest, Zephyr, QAComplete, Usersnap, and Keploy.Choosing the right tool depends on team size, agile environment, visual feedback needs, and automation-driven testing requirements.