Leading UX prototyping tools such as Figma, Adobe XD, Sketch, InVision, and Axure RP are widely used to create wireframes, interactive prototypes, and design systems, each offering different strengths. Figma leads with real-time collaboration, cloud access, and strong scalability, making it ideal for teams, while Adobe XD and Sketch provide intuitive interfaces and solid integrations for designers. InVision focuses on quick prototyping and feedback workflows, and Axure RP excels in advanced interactions, logic-based prototypes, and enterprise-level documentation. Key factors to evaluate include collaboration features, ease of use, interactivity depth, integration with development tools, performance, and scalability. Enterprise-grade tools offer more advanced features, automation, and scalability but have a steeper learning curve and higher cost, whereas beginner-friendly tools are easier to learn, faster to deploy, and more cost-effective but may lack complex interaction capabilities and deep customization.