Price2Spy - Price2Spy is a price monitoring, pricing analytics, and repricing tool, meant to help eCommerce professionals keep an eye on their competitors or retailers.
Owler - Owler is a crowdsourced data model allowing users to follow, track, and research companies.
Priceshape - PriceShape give you dynamic and data-driven pricing, complete overview of competitors’ prices and inventory status, a higher return on marketing budgets and the ability to create individual pricing strategies.
Crunchbase - Crunchbase is a platform for discovering industry trends, investments, and news about companies around the world.
FrigginYeah - An eCommerce product monitoring software built by Brands for Brands.
App Annie - App Annie is a marketing analytics tool available for apps of all kinds. With App Annie, you can track sales, traffic, and a variety of other factors pertinent to monitoring an app's trajectory.