VirusTotal - VirusTotal is a free service that analyzes suspicious files and URLs and facilitates the quick...
BuiltWith - Find out the technology behind websites
Hunter TechLookup - Create lists of websites by technology for free
FindThatLead Prospector - Feed your sales team with daily leads.
URLscan.io - urlscan.io is a free service to scan and analyse websites. When a URL is submitted to urlscan.io, an automated process will browse to the URL like a regular user and record the activity that this page navigation creates.
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!