Proto.io is #6 in Top 10 Prototyping tools
Last updated: October 05, 2019
Create fully-interactive high-fidelity prototypes in minutes that look and work exactly like your app should. Turn your wireframes and mobile mockups into amazing interactive prototypes. Filled with rich media, animations and touch events. Swipe, tap, rotate and examine your app inside out the same way your end user will. Share your prototype with colleagues and friends to collaborate and review.
Positions in ratings
#6 in Top 10 Prototyping tools
The best alternatives to Proto.io are: Axure, Flinto, InVision, Fluid UI