Sumo - Free tools to grow your email list.
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.
Pure360 - Email Marketing Software and Services
ElasticSearch - Elasticsearch is an open source, distributed, RESTful search engine.
ChannelAdvisor - As your partner in e-commerce success, we’re here to help you acquire more customers and land more sales than ever before. We keep our customers growing — and we have the stats to prove it.
Google Custom Search - Google Custom Search enables you to create a search engine for your website, your blog, or a collection of websites.