Optimizely - A/B testing you'll actually use.
Dynamic Yield - Personalization & customer experience management
Croct - Dynamic and high-performance component-based headless CMS that simplifies product optimization and helps product teams scale experimentation without over-relying on developers.
AB Tasty - AB Tasty is an all-inclusive platform for conversion rate optimization, personalization, customer activation, and testing.
Google Marketing Platform - Google's unified and improved marketing and analytics tools.
Contentful - You don't need another CMS. You need a better way to manage content — unified, structured, and ready to deploy to any digital channel.