Sylius
Open SourceOpen Source Headless eCommerce Framework for B2C and B2B Online Stores
AI Summary
Sylius is an Open Source Headless eCommerce framework based on Symfony, targeted at mid-sized and enterprise companies. It offers a modern, API-first architecture with extensive customization options for B2C and B2B online stores. The platform places special emphasis on developer experience, testability, and scalability.
✓ Pros
- + Open Source and free with large community (650+ contributors)
- + Symfony-based with modern development practices and API Platform
- + High test coverage through Behavior Driven Development (BDD)
- + Flexible scaling from VPS to cloud with Kubernetes
✗ Cons
- − Requires Symfony and PHP developer expertise for implementation
- − Self-hosting and maintenance necessary, higher technical effort than SaaS solutions
Use Cases
- → Building custom B2C and B2B online stores with tailored features
- → Headless Commerce with PWA frontends or mobile apps via REST API
- → Scalable marketplace solutions with Docker and Kubernetes
- → Migration from legacy systems to modern, maintainable eCommerce platforms
Who is it for?
For mid-sized and enterprise companies as well as developer teams that require custom, scalable eCommerce solutions with a modern tech stack.
Tags
What is Sylius?
Sylius is an open-source eCommerce framework built on the PHP framework Symfony, with an API-first architecture. The platform is aimed at teams that want to build an online shop from scratch according to their own requirements. That means no off-the-shelf product, but a framework that handles the foundational setup and allows targeted customisation. The source code is freely available, and over 650 contributors have worked on the codebase.
Core features
- API-first architecture: Sylius is built on API Platform and provides REST APIs that can be used to connect PWA frontends or mobile apps.
- Symfony foundation: The framework follows Symfony conventions, which lowers the barrier for existing Symfony developers and gives access to the entire Symfony ecosystem.
- Behavior Driven Development (BDD): The platform places strong emphasis on test coverage. BDD is a core part of the development approach, not a later addition.
- B2C and B2B: Sylius covers both commerce models and can be used for marketplaces as well as conventional shop scenarios.
- Scaling with container infrastructure: The platform runs on Docker and Kubernetes, from a single VPS to full cloud infrastructure.
Who is Sylius for?
Developer teams familiar with PHP and Symfony can get up to speed with the framework quickly. Those who need to learn both first should factor in the additional effort. Sylius also requires teams to operate and maintain their own server infrastructure. There is no managed hosting from the vendor. That makes the tool a poor fit for teams without DevOps capacity.
Sylius makes sense where standard SaaS solutions hit their limits: complex B2B logic, custom checkout processes, or migrating legacy systems to a maintainable codebase.
Context & alternatives
Sylius belongs to the category of self-hosted, developer-centric eCommerce frameworks. Comparable approaches include Magento (Adobe Commerce) and Shopware, both PHP-based and relying on self-managed server infrastructure. Shopware offers an API-first option, and Magento has broader enterprise adoption. Teams that want to avoid a PHP stack can look at Medusa.js, which follows the same headless approach in Node.js.
The concrete advantage of Sylius over these alternatives lies in its Symfony integration. Teams already running Symfony applications can embed Sylius directly into existing architectures.
