Design & Prototyping
Principle makes it easy to animate your designs and build high fidelity interactive prototypes.
Framer is your design tool if you think interactive, responsive and in motion. It creates realistic prototypes, and brings everything closer to production.
Create simple click-dummys and test your designs on different devices with the possibility for everybody to comment.
Sketch is the most developed and mature product design tool and has the best features but might not fit every setup.