Shopify Hydrogen vs Medusa vs Commerce.js: Headless Commerce 2026

TL;DR

Choose Shopify Hydrogen when Shopify is the commerce system and you want its supported headless storefront path. Choose Medusa when your team wants to deploy and extend a commerce backend. Do not shortlist Commerce.js for a new build from this guide: its npm package remains downloadable, but its first-party site and documentation were unavailable at the evidence point and the repository named by npm returned Not Found.

Key Takeaways

Hydrogen is tied to Shopify headless storefronts rather than a general-purpose commerce backend.
Medusa provides commerce modules and APIs that your team deploys, extends, upgrades, and operates.
Commerce.js should be treated as a legacy SDK artifact pending proof of an active service.
Managed-plan prices, package distributions, repository counters, and self-hosted operating costs answer different questions.
Validate catalog, cart, checkout, payment, tax, fulfillment, and rollback behavior with your own implementation.

At-a-glance

Decision area	Shopify Hydrogen	Medusa	Commerce.js
Current selection status	Active Shopify headless storefront path	Active deployable commerce platform	Unavailable/unverified for a new selection
Product boundary	Storefront framework connected to Shopify	Commerce backend and extensible modules	Old JavaScript SDK record in the current evidence set
Operations	Shopify platform plus storefront deployment	Your deployment, data, upgrades, and extensions	No current service surface verified
Evaluation focus	Storefront API, cart, checkout, Shopify constraints	Modules, workflows, data ownership, payment and fulfillment integrations	Establish current owner, docs, service, and support before any test

Comparison Matrix

Shopify Hydrogen

Hydrogen is Shopify’s supported framework path for headless storefronts. It fits a team that has already chosen Shopify for products, carts, checkout, and commerce operations but wants a custom storefront. Start with the current Hydrogen documentation and test the exact Storefront API, caching, deployment, and checkout flow your store requires.

Medusa

Medusa is software you deploy and extend. Its current docs describe commerce building blocks and modules rather than a managed storefront plan. This gives an engineering team more control over backend behavior, but it also creates responsibility for infrastructure, upgrades, backups, observability, payment integrations, and operational support. Current package metadata for Medusa 2.19.0 requires Node ^20.19.0 || >=22.12.0.

Commerce.js

The @chec/commerce.js 2.8.0 package record remains in npm, but the linked homepage is unavailable. The first-party site did not resolve, its docs did not resolve, and the GitHub repository named by npm returned Not Found at access time. Treat it as a legacy SDK artifact, pending proof of an active service, current documentation, and a supported migration or new-project path.

Pricing and total operating cost

Pricing sources were accessed 2026-08-24. Shopify’s live pricing page is the only managed-commerce plan grid in this frozen source set. Medusa’s current docs describe software that a team deploys and extends. Commerce.js has no verified live service grid here. Use only a current named plan for Shopify, and model Medusa through infrastructure, engineering, payment, data, observability, upgrade, and support costs.

Do not compress those different models into one monthly price. Confirm the exact Shopify pricing row, currency, billing interval, checkout conditions, and required add-ons before purchase.

Package and repository context

For 2026-08-17 through 2026-08-23, npm recorded 58208 @shopify/hydrogen distributions, 142392 @medusajs/medusa distributions, and 283 @chec/commerce.js distributions. GitHub recorded Hydrogen at 2,098 stars/432 forks and Medusa at 35,980/5,134. These values are package distributions and repository counters, not users, active merchants, stores, or transaction volume.

There is no comparable first-party dataset for ratings, reviews, merchants, or deployments across the candidates. Dated counters are useful maintenance context, not a quality ranking.

Release and license boundaries

At access time, npm identified @shopify/hydrogen 2026.4.5, @medusajs/medusa 2.19.0, and @chec/commerce.js 2.8.0. GitHub’s latest Medusa release was v2.19.0. The Commerce.js package version proves only that the artifact exists in the registry; it does not establish a current SaaS product.

Current first-party records identify Hydrogen as MIT. Medusa’s repository license says the default repository is MIT, with identified Enterprise Edition material governed separately. The Commerce.js package reports BSD-3-Clause. Review the exact files and commercial terms that your deployment will use.

Capability and integration checklist

Hydrogen should be tested as a Shopify-specific storefront. Medusa should be tested as an owned backend. Commerce.js should not progress to technical evaluation until a current first-party owner and service surface can be verified.

For Hydrogen or Medusa, validate:

Product variants, inventory, price lists, and localization.
Cart creation, line updates, discounts, tax, shipping, and abandoned sessions.
Checkout ownership and the boundary between storefront and payment systems.
Webhook delivery, retries, idempotency, and reconciliation.
Customer identity, order history, refunds, and support access.
Content management and product-data synchronization.
Backup, restore, rollback, and regional data requirements.

These tests are more informative than copying old examples or assuming equivalent React hooks and payment-provider support.

Performance, security, and compliance

There is no controlled benchmark or compliance receipt for a three-way speed, sizing, PCI-scope, or international-complexity comparison. Test the real catalog size, traffic shape, cache behavior, checkout path, regions, and payment architecture. Record versions, configuration, infrastructure, warmup, repetitions, and raw output.

For payment security, document which system receives card data, which system owns checkout, how tokens and webhooks are protected, and what evidence supports the resulting compliance scope. Product documentation alone does not settle the scope of a specific deployment.

Migration Notes

A practical proof of concept should cover one representative purchase flow:

Import a bounded product set with variants and inventory.
Build one category and product-detail route.
Exercise cart, discount, tax, shipping, checkout, refund, and webhook paths.
Reconcile order state between storefront, commerce backend, payment provider, and fulfillment system.
Measure operational work: deploys, schema changes, backups, logs, alerts, and incident recovery.
Rehearse export and rollback before committing the full catalog.

If an existing store depends on Commerce.js, preserve the deployed system while you inventory APIs, data, webhooks, and payment flows. Do not assume that a registry package is enough to reconstruct the service.

Methodology

This refresh uses first-party docs, pricing, registry records, repository metadata, release records, and dated npm distribution data accessed on 2026-08-24. It separates current product surfaces from old artifacts and avoids inferring merchants, quality, or performance from package and repository counters. Versions, plans, and availability require a fresh check before publication or purchase.

Shopify Hydrogen vs Medusa vs Commerce.js 2026