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.
Egrow - Egrow is a free web-based tool specifically developed for Amazon sellers.
Samar Pro Amazon Revenue Calculator - Amazon FBA calculator's fast and easy version by Samar Hanif. Watch the video to know how this calculator makes your business calculations much easier and faster