Svelte - Cybernetically enhanced web apps
Optimizely - A/B testing you'll actually use.
DronaHQ Designer - UI design tool to build captivating front end with no code.
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
FlexboxPatterns - Build awesome user interfaces with CSS flexbox
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.