Optimizely - A/B testing you'll actually use.
Heap - Analytics for web and iOS. Heap automatically captures every user action in your app and lets you measure it all. Clicks, taps, swipes, form submissions, page views, and more.
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.
Nicereply - Improve customer service and customer experience with Nicereply - online customer satisfaction survey software, including CSAT, NPS & CES 2.0.
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
ClickCease - ClickCease is a click fraud detection and protection solution.