AnyMailFinder.com - Find anyone's email address
BuiltWith - Find out the technology behind websites
Hunter - Find all the email addresses related to a domain
Lead Forensics - B2B website analytics and lead generation.
AeroLeads - AeroLeads is a lead generation software which finds prospects with email and phone number.
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!