Exto.io - Marketing and analytics extensions for Magento 2 Enterprise. Exto.io is the next project of Magento veterans. Founded with the idea of creating productivity-boosting marketing and analytics solutions for the eCommerce field, Exto.io helps Magento-based businesses launch, analyze and optimize marketing campaigns. Their key product is a powerful and rule-breaking Analytics extension for Magento 2 which is totally free. Worth checking.