Daddy Analytics - Track incoming Leads in Salesforce by Source, including Google Adwords, as well as social media such as Twitter and Facebook. Also track Leads by referring website and SEO.
Outreach - Outreach Is Your Sales Communication Platform
Clari - Clari is a predictive analytics platform for sales people.
SalesLoft - The simpliest way to build the most accurate and targeted lists of leads on the internet
Everstring - EverString helps companies leverage data to optimize sales and marketing capabilities.
Yesware - Sell smarter with email tracking and more