Adobe Target is recommended for medium to large enterprises, digital marketers, e-commerce businesses, and any organization that prioritizes user experience optimization and has the technical capability to implement and manage advanced testing and personalization strategies.
Optimizely - A/B testing you'll actually use.
invesp Pii Testing Engine - invesp Pii testing engine offers A/B testing solution for site optimization.
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
SiteGainer - SiteGainer is an A/B testing and conversion optimization platform.
AB Tasty - AB Tasty is an all-inclusive platform for conversion rate optimization, personalization, customer activation, and testing.
Experiment Engine - Experiment Engine is a A/B testing solution that harnesses human expertise to automate conversion optimization.