WhatRuns is a free research and competitive intelligence tool for developers, designers and salespeople to know the technologies used on any website.
Around the web
Beautiful Design, Easy to UseCons:
None I can think of
Its brilliant. It gives you a quick breakdown of what the site is made up of.
My personal fav is that it tells you which theme a Wordpress site is using upfront also shows the extensions used.
Must have for marketers / anyone interested in webdesign.
Great clean lookCons:
takes a few seconds to load. Not a big deal
Just tried this and I love the look and the clean UX. If the data is as good as BuiltWith, I will switch. :)