LinkedIn Sales Navigator - Sales tool for LinkedIn users.
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!
Gainful.io - Capture B2B leads on AngelList, CrunchBase and LinkedIn
BuiltWith - Find out the technology behind websites
Clearbit - Clearbit provides Business Intelligence APIs
Lead Forensics - B2B website analytics and lead generation.