ProfitGuru - ProfitGuru is the easiest way to find the most profits on Amazon.
Skuuudle - Discover, match and monitor your eCommerce competitors.
Jungle Scout - Amazon product research made easy.
Price2Spy - Price2Spy is a price monitoring, pricing analytics, and repricing tool, meant to help eCommerce professionals keep an eye on their competitors or retailers.
AmzScope - Find profitable products for sale on Amazon in one click, relying on statistics instead of intuition
Prisync - Prisync is a competitor price tracking and monitoring software for all sizes of e-commerce companies worldwide.