What are some alternatives?
When comparing Marpipe and Direktor, you can also consider the following products
Piar.io - Optimize link preview for any social networks and messengers
Zarget - Zarget is new age AB testing and Heatmap software that lets you optimize your website with just a few clicks thereby increasing sales.
GoodUI Evidence - People's A/B test results that show which UI ideas work best
AbTest.io - A free url shortener with A/B testing features
Zoho PageSense - The Complete A/B Testing and Website Optimization Software for Marketers.