Sailthru - Sailthru Smart DataTM technology enables businesses to optimize, automate, and deliver personalized experiences to each individual at scale.
Dynamic Yield - Personalization & customer experience management
Optimizely - A/B testing you'll actually use.
Lytics - Lytics is a company that utilizes machine learning to collect and analyze data to help you find new approaches to marketing. They offer unique and customized experiences to each customer. Read more about Lytics.
Google Marketing Platform - Google's unified and improved marketing and analytics tools.
Prudsys - Prudsys is a realtime analytics system and personalisation solution.