AbTest.io - A free url shortener with A/B testing features
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Marpipe - Automate Your Ad Testing, Optimize Your Creative
Leanplum A/B Testing - Leanplum A/B Testing is a service that helps you maximize ROI by improving customer’s experience and building loyalty with the brand.
GoodUI Fastforward - Lift your conversion rate with repeatedly AB tested patterns
StoreMaven - A/B testing and design platform for App Store and Google Play icons, screenshots and videos.