Clearbit - Clearbit provides Business Intelligence APIs
POPUPSMART - A no-code tool to increase e-commerce sales, build email lists and engage with your visitors in just 5-minutes.
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
Sleeknote - Set up lead capture forms on your website in minutes. No coding required. Sync your new email leads with your favorite email service provider. Try for free.
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.
OptinMonster - OptinMonster helps to convert abandoning website visitors into subscribers and customers.