Medusa

What is Medusa?

Medusa is an open source headless commerce platform that gives developers the building blocks for an online store — carts, orders, products, inventory, payments, and promotions — as modular commerce logic you extend in code. The current Medusa 2.0 is built in TypeScript on Node.js, with a React-based admin dashboard, and you self-host the backend and own every workflow.

What is Medusa best for?

Medusa is best for development teams building custom commerce that a SaaS platform can’t bend to — B2B portals, marketplaces, subscriptions, point-of-sale, or DTC stores with unusual checkout, pricing, or fulfillment logic. It assumes you have engineers: you get an API-first engine and full control of the storefront, not a click-together store.

What can Medusa do?

• Modular commerce engine — independent modules for products, carts, orders, pricing, inventory, promotions, and tax that you can use, replace, or extend.
• Headless by default — a REST/JS-SDK admin and store API, so you build the storefront in any framework (Next.js starter included).
• Customizable admin dashboard — a React admin you can extend with custom widgets, routes, and settings.
• Multi-region and multi-currency — region-specific currencies, tax rules, and pricing for international selling.
• Multi-warehouse inventory — stock locations and inventory management across multiple warehouses and sales channels.
• Promotion and campaign engine — discounts, conditional rules, and promotional campaigns.
• B2B and B2C workflows — quotes, company accounts, and bulk buying alongside standard retail flows.
• Workflow SDK — orchestrate custom commerce flows with retries and compensation steps in code.

Where does Medusa fall short?

Medusa requires real engineering. There is no non-technical store builder — you (or a developer) write code and run infrastructure, so it’s a poor fit for teams without developers to build and maintain the store.

The ecosystem is younger than Shopify’s. There’s no equivalent app store, so integrations like payment gateways, shipping, or analytics often mean building or wiring them yourself rather than installing a plugin.

Is Medusa free?

Yes — the Medusa core and its commerce modules are released under the permissive MIT license, so you can self-host the full platform for free and pay only for your own infrastructure. There are no licenses, seat fees, or GMV (gross merchandise value) cuts on the open source version. Medusa Cloud, the optional managed hosting with deployments, scaling, and built-in AI tooling, is a paid add-on starting around $29/mo plus infrastructure.

What does Medusa replace?

Medusa is most often adopted as a Shopify alternative for teams that have outgrown a hosted SaaS store and want to own their commerce stack instead of paying plan tiers and transaction fees. It also competes with enterprise headless platforms like commercetools. The trade-off is ownership and flexibility in exchange for the engineering effort Shopify hides.

FAQ

Is Medusa open source? Yes. Medusa’s core and commerce modules are licensed under MIT, a permissive open source license, and developed in the open on GitHub.

Can I self-host Medusa for free? Yes. You can run the entire platform yourself at no license cost — you pay only for the servers, database, and Redis it runs on. Managed hosting via Medusa Cloud is the paid alternative.

Is Medusa a good Shopify alternative? For teams with developers who need deep customization, yes — Medusa gives you full control over checkout, pricing, and backend logic that Shopify restricts. For non-technical merchants who want a store running today, Shopify’s hosted simplicity is the better fit.

What do I need to run Medusa? A Node.js environment, a PostgreSQL database, and Redis, plus somewhere to host the backend and your storefront. Familiarity with TypeScript and JavaScript is expected to customize and maintain it.