I wrote an article on Medium on the need for a true UX tool:
https://medium.com/@JuliusHuijnk/a-true-ux-tool-9e892b0dc1a5
Nice to see Proto.io reply on Twitter.
@Juliu Thanks for the mention in your post https://t.co/O27gZ1aN7T
â Proto.io (@protoio) July 1, 2015