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!
Woopra - Track your customers' web and mobile activity, forms, emails, support tickets and more, all in one place with customer analytics. Analyze and take action.
Lead Forensics - B2B website analytics and lead generation.
Plumb5 - Plumb5 is a real-time end-to-end customer centric digital analytical & marketing automation utility system helping marketers to generate more leads using automated tools.
Clearbit - Clearbit provides Business Intelligence APIs
Ahoy Ruby Gem - Analytics for Rails. Track visits and events in Ruby, JavaScript, and native apps. Data is stored in your database by default so you can easily combine it with other data.