Feedity - Create RSS feed for any webpage or podcast. Extract data and turn dynamic websites into spreadsheet or API. Feedity is an online RSS feed generator and podcast feed builder tool. Display feeds on website.
Optimizely - A/B testing you'll actually use.
WebRSS - RSS Widget - RSS to HTML - Display RSS for Free with Web RSS
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
follow.it - follow.it gets publishers more followers & recurring traffic, and provides a better reading experience for followers
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.