Open Source Ecommerce
An online store is the rare app where downtime and lock-in cost actual revenue per minute, so the real question isn't features at launch but how far you can bend the checkout, pricing, and fulfillment logic before the platform fights you. The open source options here ship as code you own outright, from classic monolithic shops to API-first commerce engines, so the storefront, the cart, and the order data live in systems you can extend, self-host, and migrate without paying a cut of every sale to do it.
Medusa
Open-source commerce platform with a customization framework for building custom stores
Bagisto
Open source Laravel ecommerce platform for stores, marketplaces, B2B, and headless commerce
Saleor
GraphQL-first headless commerce platform for API-only, composable storefronts
Spree
Open-source headless ecommerce with REST API, TypeScript SDK, Next.js storefront, and no platform fees
Magento Open Source
Open source ecommerce software for building an online store from the ground up
WooCommerce
Open-source ecommerce platform for WordPress with full control of your store, data, and costs
EverShop
TypeScript-first ecommerce platform built with GraphQL and React for custom stores
nopCommerce
Free, open-source ASP.NET Core ecommerce platform powering 60,000 stores worldwide
PrestaShop
Open-source ecommerce platform for building a customizable online store