Intellimize - Convert more. Optimize and personalize for every website visitor.
Optimizely - A/B testing you'll actually use.
Webtrends Optimize - Webtrends Optimize - a powerful, enterprise-grade Testing and Personalisation platform. AB, MVT & Server-side Testing, Product Recommendations & much more.
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
Chartbeat - Chartbeat shows you real-time traffic to your website and allows you to set alerts for any downtime or spikes in traffic.
UserReplay - Customer experience management software for improving conversion rates.