Open Source Headless Commerce Platforms: Medusa, Saleor, Vendure Compared

Commercetools charges $40,000–$300,000 per year just for the license. That’s before you write a single line of code, hire a developer, or configure a payment method. The enterprise headless platforms — Commercetools, Elastic Path, Fabric — charge for existence. The three serious open-source alternatives charge zero for the license: Medusa.js (30,970+ GitHub stars), Saleor (22,877 stars), and Vendure (8,099 stars). But “free license” and “free to run” are different things. This is the honest comparison of all three platforms — including the numbers, the tradeoffs, and when WooCommerce at $15,000–$30,000 makes more financial sense than any of them.

Why Open Source Headless Commerce Exists

The enterprise headless platforms created the problem they were supposed to solve. Commercetools positions itself as API-first composable commerce. The license starts at $40,000/year and can reach $300,000/year before you account for implementation — which typically runs $300,000–$800,000 for a production deployment. That is not a commerce platform. That is a budget line.

Open-source headless commerce emerged as the technically capable alternative that doesn’t charge for breathing. Medusa.js ships under the MIT license. Vendure ships under MIT. Saleor ships under Apache 2.0. All three mean the same thing in practice: you can run the platform in production at any scale, modify the code however you need, and pay nothing to the framework maintainer for the privilege.

What you do pay for is everything else. Hosting. The development team that builds your storefront, because none of these platforms include one. The integrations. The ongoing maintenance. The people who understand the codebase well enough to extend it. Open source eliminates the vendor licensing fee — it does not eliminate the cost of running production software.

That distinction matters before this comparison can be useful. All three platforms give you code ownership, zero transaction fees, and full control over your infrastructure. The differences between them are about language ecosystem, community maturity, architectural philosophy, and which type of development team will be productive on them.

The Three Platforms — Quick Overview

Medusa.js is the fastest-growing open-source commerce framework right now. Built in Node.js and TypeScript, its architecture is modular — the core handles products, orders, cart, payments, and fulfillment as separate modules that can be extended or replaced. Medusa Cloud offers a managed backend option at $29–$299/month, which reduces the infrastructure overhead compared to the other two. The community is the most active of the three, and the GitHub star trajectory reflects that.

Saleor is the oldest and most battle-tested of the group. Built in Python on Django with a GraphQL-first API, it has the most mature API design in open-source commerce. Saleor’s GraphQL schema is well-documented and comprehensive — if you need a headless storefront to query a reliable, consistent API, Saleor’s API has the fewest rough edges. There is no official managed hosting option; you’re running it yourself.

Vendure is built on NestJS, the TypeScript server-side framework that enforces a structured, module-based architecture. If you know NestJS, Vendure will feel immediately familiar — the same dependency injection, module organization, and decorators. The plugin system is one of the cleanest in the open-source commerce space. The community is smaller than Medusa’s, and managed hosting options are limited, but for TypeScript teams that value architectural structure, Vendure’s codebase is the most organized of the three.

All three run PostgreSQL. All three require you to build your own storefront. All three give you full ownership of the resulting system.

Medusa.js — Strengths, Weaknesses, Fit

Medusa’s biggest advantage is momentum. The framework has added roughly 5,000 GitHub stars in the past year and the contributor base is growing. That matters practically: active development means bugs get fixed, new integrations appear, and documentation improves. Medusa 2.0 overhauled the architecture to be fully modular — you can run just the commerce modules you need without carrying unused code.

The payment integration story is Medusa’s strongest category. Stripe, Klarna, PayPal, Adyen — the official payment plugins are well-maintained. Stripe in particular is deeply integrated, which matters for the B2B and marketplace use cases where Medusa is most commonly deployed. CMS integrations — Contentful, Sanity, Builder.io — are better documented in Medusa’s ecosystem than in either Saleor or Vendure.

Medusa Cloud is worth mentioning specifically. At $29/month (Starter) and $299/month (Professional), it manages the backend API infrastructure — database, hosting, automated updates. You still build and host your own storefront, but the backend complexity is reduced. Neither Saleor nor Vendure has an equivalent managed option with this pricing.

The weaknesses are real. Medusa has no native subscription billing. Building subscriptions on Medusa means custom Stripe Billing integration — it works, but it’s not out of the box. The frontend is entirely your responsibility; there is a Next.js starter available, but it is a starting point, not a complete storefront. TypeScript expertise is not optional — if your team isn’t fluent in TypeScript and Node.js backend patterns, the maintenance burden will compound quickly.

Production build cost runs $50,000 at the minimum for a straightforward implementation. Complex builds — multi-region, custom fulfillment logic, B2B workflows — run $100,000–$200,000+. That’s before ongoing maintenance, which typically runs 5–15 hours of developer time per month.

Medusa is the right fit for JavaScript-native development teams, B2B marketplaces that need custom pricing logic, and businesses that are exiting Shopify and want to eliminate transaction fees without switching languages. If your engineering team already works in TypeScript and Node.js, the Medusa codebase will feel natural. If they don’t, the learning curve adds to the project cost.

Saleor — Strengths, Weaknesses, Fit

Saleor’s GraphQL API is the best in class for open-source commerce. The schema is well-designed, the documentation is thorough, and the API has the kind of consistency that comes from years of production use and deliberate design decisions. If you are building a headless storefront and care about the reliability of the data layer, Saleor’s API gives you fewer surprises than the alternatives.

The B2B feature set is Saleor’s other differentiator. Multi-warehouse inventory, channel management (running multiple storefronts from a single Saleor instance with separate pricing per channel), complex discount engines, and draft order management are all built into the core. These are features that require significant custom development in Medusa and are less developed in Vendure.

For Python shops, Saleor removes the language-switching problem entirely. If your team is already running Django applications, a Saleor backend fits into the existing deployment pattern, CI/CD pipeline, and team expertise. You’re not hiring a Node.js developer to maintain a system your Python developers can’t touch.

The weaknesses are about momentum and ecosystem rather than capability. Saleor’s GitHub growth has slowed relative to Medusa’s. The community is smaller, third-party integrations are less numerous, and when you run into an edge case, the StackOverflow-equivalent of “someone has already solved this” is less reliable than with Medusa. The managed hosting story is self-hosted only — you’re setting up and running the infrastructure yourself, which adds DevOps overhead compared to Medusa Cloud.

Subscription support is limited, similar to Medusa. Native subscription billing is not a Saleor core feature.

Production build cost runs $40,000–$100,000+ depending on complexity. The Python developer talent pool is smaller than JavaScript, and Python developers with Django and GraphQL depth command similar rates to TypeScript developers — so the labor cost differential is smaller than it might appear.

Saleor is the right fit for teams already running Python/Django in production, businesses with complex B2B pricing requirements, and organizations building multi-storefront commerce where Saleor’s channel architecture directly solves the problem. If your team is JavaScript-first, Saleor requires a language switch that Medusa and Vendure do not.

Vendure — Strengths, Weaknesses, Fit

Vendure’s architectural discipline is its defining characteristic. NestJS enforces structure through dependency injection, module organization, and TypeScript throughout. For development teams that value maintainable code over rapid prototyping, the Vendure codebase is easier to reason about than Medusa’s more flexible architecture. Everything has a place. The plugin system is consistent. Testing is built into the framework patterns.

The plugin architecture deserves specific attention. Vendure plugins are proper NestJS modules — they extend the core through well-defined interfaces rather than monkey-patching. This means third-party plugins and your own custom plugins are less likely to conflict, and the upgrade path when Vendure releases a new version is cleaner than platforms with looser extension models.

TypeScript is first-class throughout. Vendure doesn’t have JavaScript fallbacks or mixed-language areas — the entire stack, from API resolvers to database entities to plugin interfaces, is TypeScript. For teams with strong TypeScript discipline, this is a significant advantage. Type errors surface at compile time, not in production.

The weaknesses come down to community size and managed hosting. Vendure’s 8,099 stars are real but represent a smaller community than Medusa. Third-party plugin availability is more limited. When you need an integration that isn’t officially supported, you’re building it yourself — which is always true in open source, but the likelihood of finding an existing solution is lower with Vendure than with Medusa. There are no official managed hosting options comparable to Medusa Cloud.

Subscription support is limited, similar to the other two platforms.

Production build cost runs $40,000–$80,000+ for a standard implementation. NestJS developers who know Vendure’s architecture can work efficiently, but the talent pool that combines NestJS depth with Vendure production experience is small. Plan for some ramp-up time even with experienced NestJS developers.

Vendure is the right fit for TypeScript development teams already working in NestJS, organizations where long-term maintainability outweighs time-to-market, and agencies that want a predictable, structured codebase they can onboard developers to without extensive knowledge transfer. If your team is NestJS-native, Vendure will feel like commerce dropped into your existing architecture rather than a new system you have to learn.

Side-by-Side Comparison

	Medusa.js	Saleor	Vendure
GitHub stars	30,970+	22,877	8,099
Language / stack	Node.js / TypeScript	Python / Django	NestJS / TypeScript
License	MIT	Apache 2.0	MIT
Managed cloud	$29–$299/mo	Self-hosted only	Self-hosted only
Native subscriptions	No (custom Stripe)	Limited	Limited
Est. production build	$50K+	$40K–$100K+	$40K–$80K+
Best for	JS teams, Shopify exits	Python shops, B2B	TypeScript / NestJS teams

A few things worth noting about this table. The GitHub stars reflect community size but also timing — Medusa’s accelerating growth is partly explained by the 2.0 relaunch and increased marketing investment. Saleor’s lower star count doesn’t mean it’s less capable; it means it has been growing more slowly in recent years. Vendure’s count is honest — it’s the smallest community of the three.

The “self-hosted only” managed hosting for Saleor and Vendure is a real operational difference, not a minor footnote. Self-hosting means someone on your team is responsible for database backups, uptime monitoring, security patching, and capacity planning. Medusa Cloud doesn’t eliminate those concerns entirely, but it reduces them significantly. If your team doesn’t have DevOps capacity, the $299/month for Medusa Cloud is a better comparison point than the theoretical zero cost of self-hosting Saleor or Vendure yourself.

The build cost estimates are honest floors, not typical project costs. “Complex” is doing a lot of work in phrases like “$100,000+.” Multi-region inventory management, custom B2B quote workflows, marketplace multi-vendor architecture — any of these can push a build well past six figures. Plan accordingly.

When None of These Is the Right Answer

Here is what the open-source headless commerce comparison typically skips: for a substantial portion of the businesses researching these platforms, the right answer is none of them.

Headless commerce is an architecture that solves specific problems. It decouples the frontend presentation layer from the commerce backend, which enables performance, custom user experiences, and flexibility that traditional monolithic platforms constrain. If those problems are real in your business, the architecture is worth the cost. If they aren’t, you’re paying $40,000–$100,000+ to solve a problem you don’t have.

The businesses that don’t need headless are: standard DTC stores selling physical products with no unusual commerce logic; businesses without a dedicated development team or agency relationship; stores under $500,000 in annual GMV where the transaction fee savings don’t recover the build investment within a reasonable timeframe; and any business that needs to launch within months rather than the 5–8 month minimum a headless build requires.

For these businesses, WooCommerce does 95% of what they need. WooCommerce is open source. It charges zero transaction fees. You own the code. The plugin ecosystem covers 68,000+ extensions — including mature, well-maintained solutions for subscriptions (WooCommerce Subscriptions), memberships, B2B pricing, bookings, and nearly every other commerce use case. A custom WooCommerce build through an agency runs $15,000–$30,000. That is a fraction of a headless build cost.

The break-even math is direct. If you’re on Shopify Advanced at $100,000/month GMV, you’re paying roughly $3,449/month in platform fees — $41,388/year. A $25,000 WooCommerce build recovers its cost in under eight months from fee savings alone. A $75,000 Medusa build takes over twenty months — and that doesn’t include ongoing maintenance costs of $1,000–$3,500/month.

WooCommerce isn’t the right answer for everyone. If you genuinely need the composable architecture — true headless separation, custom storefront with specific performance requirements, complex API-driven integrations — then WooCommerce’s traditional monolithic architecture isn’t the right fit. But “I want open source with no transaction fees” is not by itself a reason to build headless. WooCommerce solves that problem at a fraction of the cost.

The businesses that should seriously evaluate Medusa, Saleor, or Vendure are those where the commerce architecture is itself a product decision: marketplace platforms, B2B commerce with deeply custom pricing logic, multi-storefront operations, or businesses building commerce as a feature inside a larger application. For everyone else, the complexity premium isn’t paying for anything they’ll use.

Making the Decision

All three platforms are serious. None of them is vaporware, and none of them is a clear winner across all use cases. The decision is about fit across three variables: your team’s language, your commerce requirements, and whether the build cost recovers against your current fee structure within a timeline that makes business sense.

If your engineers write TypeScript and you need the fastest-growing community, best managed hosting option, and strongest payment integrations: Medusa.js is the most likely fit. If your engineers write Python and you need mature GraphQL and strong B2B features: Saleor makes sense without requiring a language switch. If your engineers are NestJS-first and care about architectural discipline above community size: Vendure is worth the smaller ecosystem trade-off.

If your engineers don’t exist yet, or if your GMV is under $500,000 annually, or if you need to be live in three months: the right answer is probably custom WooCommerce development, not headless anything. The open-source ownership and zero transaction fees are available at a build cost that makes financial sense at your scale.

The expensive mistake in this category isn’t picking the wrong headless platform. It’s picking any headless platform when headless wasn’t the right architecture to begin with.