Optimizely - A/B testing you'll actually use.
SplitMetrics - SplitMetrics is the A/B testing platform for App Store and Google Play page to discover the most converting icons, screenshots, video, etc.
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
Evolv - Evolv is the visual editor for web-based projects that are used to find better ways to connect with customers in order to improve marketing economics.
AB Tasty - AB Tasty is an all-inclusive platform for conversion rate optimization, personalization, customer activation, and testing.
Intellimize - Convert more. Optimize and personalize for every website visitor.