Optimizely - A/B testing you'll actually use.
Lander - Lander is a powerful online tool to create Landing Pages.
SplitMetrics - SplitMetrics is the A/B testing platform for App Store and Google Play page to discover the most converting icons, screenshots, video, etc.
LeadPages - LeadPages™ Software is the world's easiest landing page generator. It's the easiest way to build conversion optimized & mobile responsive landing pages.
Webtrends Optimize - Webtrends Optimize - a powerful, enterprise-grade Testing and Personalisation platform. AB, MVT & Server-side Testing, Product Recommendations & much more.
FrontMeter - The internet's most powerful AnyPage™ builder