BuiltWith - Find out the technology behind websites
Sticker List - Discover the best stickers daily and publish your own.
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
Sticker Mule Wall Graphics - Custom wall graphics for your home or office
What CMS - WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.
Sticker.Place API - Get stickers for your app