Leadfeeder - Leadfeeder converts your website visitors into sales. Connect your website's Google Analytics to Leadfeeder and unlock the power of seeing who`s visiting your site!
Algolia - Algolia's Search API makes it easy to deliver a great search experience in your apps & websites. Algolia Search provides hosted full-text, numerical, faceted and geolocalized search.
Visitor Queue - Better identify the companies that visited your website!
Optimizely - A/B testing you'll actually use.
Elucify - A completely free software tool that uses crowdsourced data to find business email addresses
Dynamic Yield - Personalization & customer experience management