Coupon Carrier - Distribute unique coupons to your customers using email, custom links or chatbots.
Optimizely - A/B testing you'll actually use.
AMZScout - AMZScout extension will help you make a decision about picking a niche based on the actual data, not intuition.
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
SellerApp - Seller App’s Smart-Data helps for Amazon Growth, Calculate Profits, PPC Campaigns, In-depth Keywords & Product Research, Analyze Competition and more.
Evolv - Evolv is the visual editor for web-based projects that are used to find better ways to connect with customers in order to improve marketing economics.