Optimizely - A/B testing you'll actually use.
CodePicnic - Create full-stack code containers right on the browser.
Dynamic Yield - Personalization & customer experience management
Bowery - Bowery improves developer productivity by simplifying the process of setting up, managing, and sharing development environments.
AB Tasty - AB Tasty is an all-inclusive platform for conversion rate optimization, personalization, customer activation, and testing.
Freshenv - A command line application to build and develop your projects in completely isolated environments.