Shoppy - Automatically get order notifications & summaries in Slack
Sell.app - Sell.app is the easiest way to sell digital products online. Spin up your own storefront in just a few minutes and start selling instantly.
Rocketr - Rocketr is a powerful, yet easy-to-use platform to sell digital goods.
WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.
Selly - Selly is a complete selling system.
Lemon Squeezy - Sell digital products the easy-peasy way