Gumroad - An all-in-one solution to sell your work and grow your audience.
Skuuudle - Discover, match and monitor your eCommerce competitors.
Payhip - Sell digital downloads, courses, coaching, and more from one simple platform.
Price2Spy - Price2Spy is a price monitoring, pricing analytics, and repricing tool, meant to help eCommerce professionals keep an eye on their competitors or retailers.
robora - Robora is a service which aims to help you sell anything, anyway you like.
BuiltWith - Find out the technology behind websites