Optimizely - A/B testing you'll actually use.
LeanPlum - Mobile A/B Testing for Native iOS and Android Apps
SplitMetrics - SplitMetrics is the A/B testing platform for App Store and Google Play page to discover the most converting icons, screenshots, video, etc.
Splitforce - Splitforce A/B testing for iOS, Android, and Unity mobile applications.
Intellimize - Convert more. Optimize and personalize for every website visitor.
Apptimize - Mobile A/B Testing for iOS and Android. Improve Your Native App Codelessly in Real-time.