Optimizely - A/B testing you'll actually use.
Google Marketing Platform - Google's unified and improved marketing and analytics tools.
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
DataXu - Marketing analytics for brands and agencies.
AB Tasty - AB Tasty is an all-inclusive platform for conversion rate optimization, personalization, customer activation, and testing.
AdRoll - AdRoll is a leader in retargeting display advertising. Draw the right people with the right strategies.