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.
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
Nicereply - Improve customer service and customer experience with Nicereply - online customer satisfaction survey software, including CSAT, NPS & CES 2.0.
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.
ClickCease - ClickCease is a click fraud detection and protection solution.