Sylius
Open-source eCommerce framework built on Symfony
About Sylius
Sylius is an open-source, headless eCommerce platform built on the Symfony PHP framework. Designed for mid-market and enterprise brands, it provides a highly customizable, API-first architecture for building tailored online shopping experiences. Available as a free Community Edition (MIT license) and a paid Sylius Plus tier with enterprise modules, SLA-backed support, and managed cloud options.
Pros & Cons
Pros
- Extremely flexible and customizable for complex bespoke commerce requirements
- Clean Symfony-based codebase easy for PHP developers to extend
- API-first and headless-ready out of the box
- Active open-source community with 650+ contributors and 500+ plugins
- Modular Plus licensing — purchase only the modules you need
- Proven at scale by major brands including Mytheresa, Intersport, and Carrefour
Cons
- Requires skilled Symfony/PHP developers — no click-and-build setup
- Steep learning curve mastering both Sylius and Symfony simultaneously
- Plus pricing is opaque — requires sales quote based on GMV
- No free trial for the commercial Plus tier
- Total cost of ownership can be high even with the free open-source core
- Smaller ecosystem compared to WooCommerce or Shopify
Key Features
API-First Headless Architecture
RESTful APIs built with API Platform for decoupled frontends, PWAs, and multi-channel delivery
Symfony Framework
Built on Symfony with full extensibility via bundles, Doctrine ORM, and Twig templating
Multi-Store Management
Manage multiple storefronts, currencies, and locales from a single instance
B2B Suite
Tailored pricing lists, multiple wishlists, enhanced search, and B2B-specific workflows
Marketplace Suite
Vendor onboarding, commission-based payment splitting, and multi-vendor management
Returns Management
Digitalized, customizable return request workflows with full RMA support
Multi-Source Inventory
Ship from multiple warehouses with ERP integration support
Loyalty System
Customer retention programs with configurable point and reward schemes
RBAC Access Control
Granular role-based admin permissions for large teams
Plugin Ecosystem
500+ community extensions available via the Sylius Addons Marketplace
Pricing
- Full source code (MIT)
- Self-hosted
- Core ecommerce features
- Community support
- Plugin ecosystem
- Individual enterprise modules
- SLA-backed support
- Security updates
- Pay per module
- All enterprise modules
- Dedicated Customer Success Manager
- 1-day SLA support
- Training & consulting
- GMV-based scaling
Best For
Custom Enterprise B2C Storefronts
Large retailers needing bespoke catalog management, promotions, and UX on owned infrastructure
B2B eCommerce Platforms
Companies selling wholesale with contract pricing, tiered pricing, and multi-buyer accounts
Multi-Vendor Marketplaces
Build marketplace platforms with vendor onboarding, commissions, and split payments
Headless Composable Commerce
Development teams building decoupled frontends consuming Sylius as a backend commerce engine via REST API
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