BuiltWith - Find out the technology behind websites
Elucify - A completely free software tool that uses crowdsourced data to find business email addresses
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
Lead Forensics - B2B website analytics and lead generation.
What CMS - WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.
KiteDesk - Use KiteDesk sales prospecting software to generate leads from our premium data marketplace. Then reach prospects and build a sales pipeline with organized Lead Lists. Syncs direct with CRM too!