sellerboard is an accurate profit analytics service with additional tools: follow-up mail campaigns, inventory management, reimbursements for lost & damaged stock and other FBA errors, PPC optimizer, listing change alerts and much more. All that for a competitive price, starting from $15 a month.
Helium 10 - Our software contains multiple Amazon seller tools to help you find high ranking keywords, identify trends, spy on competitors, & optimize product listings.
SoStocked - The first fully customizable Amazon inventory management software that allows sellers to maximize sales while minimizing overhead inventory.
Jungle Scout - Amazon product research made easy.
eComEngine - Makers of top-rated Amazon seller tools FeedbackFive, RestockPro, and MarketScout. Accelerating growth on Amazon since 2007.
Sellics - Sellics helps you to boost Your Amazon sales.
Nozzle - Nozzle is an enterprise level rank tracking tool. We pull over 400 data points from the SERPs so you can know everything that is happening for every search query that you care about.