SiteGainer - SiteGainer is an A/B testing and conversion optimization platform.
Optimizely - A/B testing you'll actually use.
Splitly - Splitly is an A/B testing tool for Amazon FBA sellers.
Webtrends Optimize - Webtrends Optimize - a powerful, enterprise-grade Testing and Personalisation platform. AB, MVT & Server-side Testing, Product Recommendations & much more.
Amazon CloudSearch - Amazon CloudSearch is a fully-managed service in the cloud that makes it easy to set up, manage, and scale a search solution for your website.
Intellimize - Convert more. Optimize and personalize for every website visitor.