Jungle Scout - Amazon product research made easy.
AMZScout - AMZScout extension will help you make a decision about picking a niche based on the actual data, not intuition.
Helium 10 - Our software contains multiple Amazon seller tools to help you find high ranking keywords, identify trends, spy on competitors, & optimize product listings.
Inventory Spy - Spy how many products remain on any Amazon Product’s offer listing page.
Datanamo - Amazon alerts and monitoring across 13 marketplaces. Datanamo tracks product listings without you having to spend countless hours on manual checks. Receive instant Email Alerts on product data changes
Egrow - Egrow is a free web-based tool specifically developed for Amazon sellers.