Speed up your product development process with revolutionary Merge technology. From UI designers to UI developers – create consistent interfaces using the same building blocks. Build prototypes that feel like the end product. Get creative with our design tool or start with hundreds of built-in UI elements. Integrate with Storybook , Git repo, or NPM package and use code components straight from your design system, app or website. Design with the exact same UI code components that devs build the product with. No coding skills required – just drag and drop the elements. Design inclusive products in line with WCAG standards. Test your prototypes with built-in features like Contrast Checker and Color Blindness Simulator. With States, Variables, Conditional Interactions and Auto Layout, your prototypes will perfectly mimic the end product experience, during usability testing.