5 Best Proto.io Alternatives for Windows in 2026

What is Figma?

This lightweight design has been chosen by UX designers new to software or those who need to carry their system around for work. The sleek and stylish design features a dual port USB charger and a lightweight metal body making it the ideal companion for userr notebook.

What is Fluid UI?

Fluid UI is the web-based wireframing dream. It gives full control over all the static, visual elements: fonts, colors, images, html elements, etc. Fluid UI › files can easily be opened and edited in any text editor as well as imported into other applications like Photoshop or Illustrator. ...

What is Justinmind?

Justinmind is the digital wireframing platform that offers a complete solution for UX with easy prototyping, collaboration and handoff. It is the most advanced wireframing tool for web, mobile and wearables.

What is MockupTiger?

MockupTiger is a comprehensive collection of wireframe kits. It includes over 2000 high-quality, handcrafted prefabricated interface elements to choose from. Whether user is designing for mobile, tablet or desktop, at home or abroad, MockupTiger is ultimate toolbox and wireframing inspiration.

What is Framer X?

Framer X is a fully integrated UI and Design App. With Framer Studio, get the power of both. Framer X hand-delivers a significantly improved User Interface, a new app icon and starts with the same pro-grade codebase as Studio. It allows to create beautiful interfaces and responsive web pages ...