Checklist Generator - Create checklists for free and host them wherever you want.
BuiltWith - Find out the technology behind websites
listshare - Create beautiful, interactive lists to share with the world.
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
Usetrace - Web app testing system that doesnât require coding or constant updating
What CMS - WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.