Clearbit - Clearbit provides Business Intelligence APIs
HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
DataXu - Marketing analytics for brands and agencies.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
V12 Data - V12 Data offers rich data sets with verified addresses and emails for personalized marketing campaigns.
Marketo - Marketo's powerful marketing automation software helps marketers master the art & science of digital marketing to engage customers and prospects.