FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Leadfeeder - Leadfeeder converts your website visitors into sales. Connect your website's Google Analytics to Leadfeeder and unlock the power of seeing who`s visiting your site!
Simple Contacts - Contact lens prescriptions from home
Clearbit - Clearbit provides Business Intelligence APIs
Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
Lead Forensics - B2B website analytics and lead generation.