Demandbase - Bizo
Optimizely - A/B testing you'll actually use.
Triblio - Triblio is an account-based marketing software that enables marketers to personalize multichannel campaigns to reach their target audience.
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
6sense - 6sense is a B2B predictive intelligence engine for marketing and sales.
Google Analytics - Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.