MetaSurvey - MetaSurvey provides light and high engagement surveys for e-commerce.
BuiltWith - Find out the technology behind websites
Spokk - Get your creations or ideas for blogs, designs, art, music, photos, YouTube videos or anything...
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
FaqFox - Find the questions your target audience is talking about
What CMS - WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.