Propeller CRM - Small business CRM with deep Gmail integration
Clearbit - Clearbit provides Business Intelligence APIs
Cloze - Smarter Relationship Management
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
Highrise - Save and organize notes and email conversations for up to 30,000 customers and contacts. Keep track of proposals and deals.
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.