Justinmind

Justinmind is not only simple to use and pleasant to learn; it also focuses on allowing you to develop a wireframe that can be tested as a working prototype right away. It accomplishes this by incorporating something that other applications have just not bothered to develop: interactive prototype features (text inputs, radio buttons, dropdowns, and so on). A working dropdown would take three or more screens to set up in a tool like Sketch or Figma, even at the most basic wireframe level. With a simple click, Justinmind adds it to your wireframe.

In reality, the ease with which realistic wireframes may be created and shared can save you hours or days of labor on any given project. As a result, Justinmind is an excellent tool for anybody seeking genuine, in-depth input on designs much sooner in the wireframe stage (with minimal effort). Apart from the content of the elements itself, Justinmind's structure is pretty simple: all of your design elements are on the left-hand side, while the organizing elements (such as folders, lists of screens, and so on) are on the right.

Detailed information:

Price: Free + from $19/month for the Professional plan

Website: https://www.justinmind.com/