Protonotes: HTML prototyping collaboration tool.Sign Up Sign up with Protonotes in less than 10 seconds. All you need is an email address. It's free. Sign up now. Activate Copy & paste a few lines of JavaScript into your prototype to activate Protonotes. See how easy it is to configure Protonotes. Note it Add, edit, delete notes. Slap notes on your prototype and make it a requirements conversation. Try them out in this sandbox page. What are Pr
