I'm working on a web-based pixel perfect mockup tool called jMockups, which is built on top of HTML5's canvas element. Most web designers use Photoshop to do th

I'm working on a web-based pixel perfect mockup tool called jMockups, which is built on top of HTML5's canvas element. Most web designers use Photoshop to do this right now, but Photoshop makes it much harder than it should be (the UX, lack of common HTML elements, difficult to share, etc). An early alpha version will be available in a week or two. If you're interested in helping test it, shoot me an email: matthew.h.mazur@gmail.com or leave a comment below.