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.
Optimizely - A/B testing you'll actually use.
Evergage - Evergage's real time web personalization software can help you boost engagement, increase revenue and drive more conversions. Web personalization software that's easy to use.
MooSend - Moosend allows you to design and send your email marketing campaigns and track the results from an easy-to-use web interface as well as a direct SMTP server connection for your smtp client or web application.
Qubit - Qubit is a web personalization platform founded by former Google workers, using innovative technology to collect, store, process, and output data to optimize consumers' experiences on the web. Read more about Qubit.
Maropost - On-Demand digital marketing and campaign management solution