VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
AddThis - AddThis free website tools include share buttons, targeting tools and content recommendations help you get more likes, shares and followers and keep them coming back.
Optimizely - A/B testing you'll actually use.
Buffer - Buffer makes it super easy to share any page you're reading. Keep your Buffer topped up and we automagically share them for you through the day.
Crazy Egg - Through Crazy Egg's heat map and scroll map reports you can get an understanding of how your visitors engage with your website so you can boost your conversion rates.
AddToAny - Share buttons by AddToAny, the universal sharing platform for websites and apps.