Building an online store without surrendering control of your data, customer information, and revenue streams to a SaaS platform is one of the most impactful infrastructure decisions a business can make. Headless e-commerce platforms separate the backend — products, orders, payments, inventory — from the frontend presentation layer, giving you full flexibility over the customer experience while keeping the commerce engine under your control.
In 2026, three open-source platforms dominate this space: Medusa, Saleor, and Vendure. Each takes a different architectural approach, supports different tech stacks, and targets different types of merchants. This guide compares them side by side and provides complete self-hosting instructions for each.
Why Self-Host Your E-Commerce Platform
Running your own e-commerce backend offers advantages that go far beyond cost savings:
- Zero platform fees. Shopify charges 0.5–2% transaction fees on top of payment processor costs. Self-hosted platforms eliminate this entirely.
- Full data ownership. Customer data, purchase history, and behavioral analytics stay on your infrastructure. No third-party data sharing, no vendor lock-in, no surprise policy changes.
- Unlimited customization. Headless architecture means your frontend can be anything — a React SPA, a static Hugo site, a mobile app, or a custom native experience — with no template restrictions.
- No API rate limits. SaaS platforms throttle API calls on lower-tier plans. Self-hosted, you control the infrastructure and can scale as needed.
- Regulatory compliance. When you host the data yourself, you control exactly where it lives and how it’s processed — critical for GDPR, CCPA, and industry-specific requirements.
- Portability. Your store is not tied to a vendor’s ecosystem. You can change hosting providers, swap payment gateways, or modify any component without platform approval.
The trade-off is operational responsibility: you manage deployment, scaling, backups, and updates. For teams with even basic DevOps experience, the returns on investment are substantial.
Platform Overview
Medusa — The Modular JavaScript Platform
Medusa is a Node.js-based headless commerce platform designed around a plugin architecture. It describes itself as “the open-source Shopify alternative” and provides a comprehensive set of commerce primitives out of the box — products, pricing, cart, checkout, orders, returns, and customer management — with the ability to extend virtually any behavior through plugins and modules.
Architecture: Monolithic Node.js backend with pluggable modules. REST API by default, with optional GraphQL through community plugins.
Database: PostgreSQL (required), Redis (recommended for caching and job queues).
Admin dashboard: Built-in React-based admin panel, shipped separately from the core server.
Best for: Developers who want Shopify-level features with complete code-level customization and a large plugin ecosystem.
Saleor — The Python-Powered GraphQL-First Platform
Saleor is a Python (Django + Graphene) headless commerce platform that is GraphQL-first from the ground up. Every operation — product queries, cart mutations, checkout flows — is exposed through a single GraphQL endpoint. Saleor’s architecture is designed for high-performance storefronts and supports multi-channel, multi-currency operations natively.
Architecture: Python/Django core with a GraphQL API layer. Separate dashboard application (React/TypeScript).
Database: PostgreSQL (required), Redis (required for caching and async tasks).
Admin dashboard: React-based dashboard included, with a rich product management interface.
Best for: Teams that want GraphQL-first APIs, strong internationalization (multi-currency, multi-language), and a polished admin experience.
Vendure — The TypeScript GraphQL Platform
Vendure is a headless commerce framework built entirely in TypeScript using NestJS and GraphQL. It emphasizes developer experience with strong typing, a clean plugin API, and a focus on B2B and complex catalog scenarios. Vendure’s architecture is designed to be extended rather than modified — you build on top of its core rather than patching internals.
Architecture: NestJS backend with GraphQL API. Admin UI and storefront starter kits provided separately.
Database: PostgreSQL and MySQL (both supported), with Redis for caching.
Admin dashboard: Angular-based admin UI, fully featured with product, order, customer, and settings management.
Best for: TypeScript/NestJS teams, B2B commerce scenarios, and projects where strong typing and developer experience are priorities.
Feature Comparison
| Feature | Medusa | Saleor | Vendure |
|---|---|---|---|
| Backend language | Node.js (JavaScript/TypeScript) | Python (Django) | TypeScript (NestJS) |
| Primary API | REST | GraphQL | GraphQL |
| Secondary API | GraphQL (community plugins) | — | REST (limited) |
| Database | PostgreSQL | PostgreSQL | PostgreSQL, MySQL |
| Admin dashboard | React (separate package) | React (included) | Angular (included) |
| Multi-currency | Yes (plugin) | Yes (native) | Yes (native) |
| Multi-language | Yes (plugin) | Yes (native) | Yes (native) |
| Multi-channel | Limited | Yes (native) | Yes (native) |
| Product variants | Yes | Yes | Yes |
| Digital products | Yes (plugin) | Yes | Yes |
| Subscriptions | Yes (plugin) | Yes (plugin) | Yes (plugin) |
| B2B features | Limited | Limited | Yes (strong) |
| Inventory management | Yes | Yes | Yes |
| Tax calculation | Plugin-based | Plugin-based | Plugin-based |
| Promotions/Discounts | Yes | Yes | Yes |
| Gift cards | Yes | Yes | Yes |
| Webhooks | Yes | Yes | Yes |
| Job queue | Yes (Redis/Bull) | Yes (Celery) | Yes (built-in) |
| Plugin system | Modules & plugins | Plugins & webhooks | Plugins (NestJS providers) |
| Storefront starters | Next.js, Gatsby | React Storefront, PWA | Next.js, Astro, React |
| License | MIT | BSD 3-Clause | MIT |
| GitHub stars | 25,000+ | docker0+ | 5,000+ |
| Docker support | Yes | Yes | Yes |
Self-Hosting Guide: Medusa
Prerequisites
- Node.js 20+ installed
- PostgreSQL 15+ running
- Redis 7+ running
- npm or pnpm package manager
Step 1: Install the Medusa CLI
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Step 2: Create a New Medusa Project
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Step 3: Configure the Database
Create a PostgreSQL database:
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Edit .env in your project root:
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Step 4: Run Migrations and Seed Data
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Step 5: Start the Medusa Server and Admin
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The backend runs on http://localhost:9000 and the admin on http://localhost:7001. Create an admin user at /app/settings/manage-your-store.
Docker Compose Deployment
For production deployment, use Docker Compose:
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Key Medusa plugins to consider for a production store:
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Self-Hosting Guide: Saleor
Prerequisites
- Docker and Docker Compose
- No local Python or PostgreSQL installation needed (all containerized)
Step 1: Clone the Saleor Platform Repository
Saleor provides a ready-made Docker Compose setup that runs all components:
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Step 2: Configure Environment Variables
Copy and edit the environment file:
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Key variables to set:
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Step 3: Start the Platform
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This starts the following services:
- saleor-api — Core GraphQL API on port 8000
- saleor-dashboard — Admin dashboard on port 9000
- saleor-storefront — Demo storefront on port 3000
- postgres — PostgreSQL database
- redis — Redis cache and message broker
- jaeger — Distributed tracing (optional)
Step 4: Run Database Migrations and Create Admin User
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Follow the prompts to create your admin account. Then access the dashboard at http://localhost:9000.
Step 5: Configure Your Store
Log into the dashboard and configure:
- Channels — Define your sales channels (web store, mobile app, wholesale)
- Warehouses — Set up inventory locations
- Payment gateways — Configure Stripe, Adyen, or Braintree
- Shipping methods — Define zones, rates, and weight-based rules
- Products and collections — Import or create your catalog
Production Docker Compose
For production, modify the compose file:
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Saleor-specific considerations for production:
- nginxe TLS termination at the reverse proxy level (Nginx, Caddy, or Traefik)
- Configure
ALLOWED_GRAPHQL_ORIGINSstrictly for your frontend domains - Use Saleor’s webhook system to sync orders with external ERP or accounting systems
- The GraphQL Playground at
/graphql/is invaluable for testing queries during development
Self-Hosting Guide: Vendure
Prerequisites
- Node.js 20+ and npm
- PostgreSQL 15+ or MySQL 8+
- Redis 7+ (recommended for caching)
Step 1: Install the Vendure CLI
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Step 2: Create a New Vendure Project
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The CLI scaffolds a complete Vendure project with TypeScript configuration, including a vendure-config.ts file that controls database, authentication, payment, and plugin settings.
Step 3: Configure the Database
Edit vendure-config.ts:
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Step 4: Set Environment Variables
Create a .env file:
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Create the database:
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Step 5: Start the Development Server
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Vendure automatically runs database migrations on first start and creates the superadmin user from your config. Access the admin UI at http://localhost:3000/admin.
Docker Compose Deployment
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Essential Vendure plugins for production:
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Vendure B2B Considerations
Vendure shines in B2B scenarios with features that the other platforms handle less elegantly:
- Customer groups with custom pricing rules
- Quote management for negotiated pricing
- Custom fields on any entity (products, orders, customers) without schema migrations
- Channel-based permissions for multi-tenant storefronts
To add a custom field to the Product entity:
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Performance and Scaling
Medusa Performance
Medusa’s Node.js architecture handles moderate traffic well. For high-traffic stores:
- Use Redis for session storage and job queue processing
- Enable CDN caching for product images and static assets
- Use a reverse proxy (Nginx, Caddy) for SSL termination and load balancing
- Consider horizontal scaling with multiple Medusa instances behind a load balancer
Typical resource requirements:
- Small store (< 100 products, < 10 orders/day): 1 CPU, 1GB RAM
- Medium store (100–1000 products, 10–100 orders/day): 2 CPU, 2GB RAM
- Large store (1000+ products, 100+ orders/day): 4+ CPU, 4GB+ RAM, separate database server
Saleor Performance
Saleor’s Django-based architecture is robust for high-traffic stores:
- GraphQL query complexity analysis prevents expensive queries
- Celery workers handle async tasks (emails, webhooks, reports)
- Redis caching significantly reduces database load for product queries
- Jaeger tracing helps identify slow GraphQL resolvers in production
Typical resource requirements:
- Small store: 2 CPU, 2GB RAM (Django + PostgreSQL + Redis)
- Medium store: 4 CPU, 4GB RAM, with separate PostgreSQL
- Large store: 4+ CPU, 8GB+ RAM, separate PostgreSQL and Redis, multiple Celery workers
Vendure Performance
Vendure’s NestJS architecture provides solid performance with TypeScript type safety:
- Built-in job queue handles background tasks without external dependencies
- GraphQL DataLoader prevents N+1 query problems
- MySQL support can be advantageous for teams with existing MySQL infrastructure
- TypeORM connection pooling handles concurrent requests efficiently
Typical resource requirements:
- Small store: 1 CPU, 1GB RAM
- Medium store: 2 CPU, 2GB RAM
- Large store: 4 CPU, 4GB RAM, separate database
Choosing the Right Platform
Choose Medusa if:
- You want the closest open-source equivalent to Shopify’s feature set
- Your team is comfortable with JavaScript/Node.js
- You value a large plugin ecosystem and community
- You prefer REST APIs over GraphQL
- You need rapid prototyping with ready-made storefront starters
Choose Saleor if:
- GraphQL is your primary API preference
- You need strong internationalization (multi-currency, multi-language, multi-channel)
- You want a polished, production-ready admin dashboard
- Your store serves multiple regions with different pricing and tax rules
- You have Python expertise on your team
Choose Vendure if:
- Your team works primarily with TypeScript and NestJS
- You are building a B2B store with complex pricing, customer groups, or custom fields
- You need MySQL support alongside PostgreSQL
- Developer experience and type safety are top priorities
- You want a clean plugin architecture that does not require modifying core code
Conclusion
All three platforms are production-ready, well-maintained, and genuinely open source. The decision ultimately comes down to your team’s technical stack and your store’s specific requirements.
For a solo developer or small team building a standard B2C store quickly, Medusa offers the gentlest learning curve and the richest plugin ecosystem. For a growing international brand that needs multi-channel sales and GraphQL APIs, Saleor provides the most polished experience. For a B2B-focused operation or a TypeScript-heavy team, Vendure delivers the strongest developer experience and extensibility.
Regardless of which platform you choose, self-hosting your e-commerce backend gives you complete control over your data, your customer relationships, and your technology stack — without paying platform fees or accepting vendor-imposed limitations.
Frequently Asked Questions (FAQ)
Which one should I choose in 2026?
The best choice depends on your specific requirements:
- For beginners: Start with the simplest option that covers your core use case
- For production: Choose the solution with the most active community and documentation
- For teams: Look for collaboration features and user management
- For privacy: Prefer fully open-source, self-hosted options with no telemetry
Refer to the comparison table above for detailed feature breakdowns.
Can I migrate between these tools?
Most tools support data import/export. Always:
- Backup your current data
- Test the migration on a staging environment
- Check official migration guides in the documentation
Are there free versions available?
All tools in this guide offer free, open-source editions. Some also provide paid plans with additional features, priority support, or managed hosting.
How do I get started?
- Review the comparison table to identify your requirements
- Visit the official documentation (links provided above)
- Start with a Docker Compose setup for easy testing
- Join the community forums for troubleshooting