Marvel - Free Prototyping for Everyone. No coding required.

Haha, no worries! Didn't see it previously. Maybe the dupe checker didn't catch it because of the "?producthunt"

Marvel is awesome but was submitted previously. Our dupe checker should have covered this. Will look into it. Sorry, Brian!

I think I know why it didn't get caught. Here's the original, posted a few months ago: http://www.producthunt.co/posts/53