Jungle Scout - Amazon product research made easy.
Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
A2X - A2X automates ecommerce accounting for Shopify, Amazon, Etsy, Walmart and eBay sellers worldwide. Trusted by hundreds of leading ecommerce accounting firms.
Fetchee - Fetchee is a free price tracking wish list app that works with all online stores worldwide.
Helium 10 - Our software contains multiple Amazon seller tools to help you find high ranking keywords, identify trends, spy on competitors, & optimize product listings.
Savelist - Found products you want but not ready to buy?