ClixTrac - ClixTrac is a platform that allows users to know how many times the visitors have clicked their ads to services.
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.
LinkTrackr - LinkTrackr helps you track your ad campaigns & affiliate links in real-time.
Dynamic Yield - Personalization & customer experience management
ClickPerfect - ClickPerfect is a platform that enables users to control their traffic coming to their ads, and they can maximize every click.
Optimizely - A/B testing you'll actually use.