Optimizely - A/B testing you'll actually use.
Adobe Campaign - Adobe Campaign provides campaign, offer, and personalization management capabilities.
SplitMetrics - SplitMetrics is the A/B testing platform for App Store and Google Play page to discover the most converting icons, screenshots, video, etc.
Salesforce Journey Builder - Journey Builder empowers you to guide customers on 1:1 journeys across channels and devices to deliver the right digital marketing solution, via the right channel.
Evolv - Evolv is the visual editor for web-based projects that are used to find better ways to connect with customers in order to improve marketing economics.
Kitewheel - Kitewheel orchestrates intelligent customer journeys by unifying decisions across all touchpoints.