Framer X has evolved from its early days as a code-only prototyping application. Today it offers a host of UI tools for building functional prototypes and testing for usability.

Figma lets designers build dynamic prototypes and mockups, test them for usability, and sync up all of the progress. Figma allows multiple people to work on or view a project at the same time

 Adobe XD offers vector-based tools for creating prototypes and mockups with an interface that’s familiar to anyone who has used other Adobe products.

With a full suite of applications, InVision gives designers all of the UI design tools they need to create fully realized and functional prototypes with dynamic elements and animations.

If you have any UI design experience, you’ve heard of Sketch. And there are quite a few reasons why it’s one of the design tools that’s so revered.