Google Analytics - Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.
Elucify - A completely free software tool that uses crowdsourced data to find business email addresses
Optimizely - A/B testing you'll actually use.
Lead Forensics - B2B website analytics and lead generation.
Smartlook - Qualitative analytics for websites and mobile apps Start understanding the 'whys' of your users' behaviors with clear, visual insights. With session recordings and event tracking, you get the complete picture.
FindThatLead Prospector - Feed your sales team with daily leads.