UXPin is a sophisticated design and prototyping tool that stands out by using a code-based approach rather than traditional vector-based methods. This allows designers to build prototypes using real HTML/CSS components, ensuring that the design behaves exactly like the final product. UXPin Merge is a flagship feature that enables teams to sync their actual React, Vue, or Angular components from Git repositories directly into the UXPin editor, bridging the gap between design and production code.

The platform supports advanced interactions, variables, and conditional logic, enabling the creation of stateful prototypes that can handle user input and complex data flows. Because it uses real code under the hood, the handoff to developers is exceptionally smooth, as the specifications are based on actual code parameters. UXPin is preferred by organizations that want to maintain a single source of truth between their design system and their live application codebases.