Optimizely - A/B testing you'll actually use.
Adobe Target - Adobe Target provides an intuitive user interface and an expanded personalization toolset.
Apptimize - Mobile A/B Testing for iOS and Android. Improve Your Native App Codelessly in Real-time.
AB Tasty - AB Tasty is an all-inclusive platform for conversion rate optimization, personalization, customer activation, and testing.
invesp Pii Testing Engine - invesp Pii testing engine offers A/B testing solution for site optimization.
BEYABLE - Real-time personalization solutions for e-commerce & lead gen websites