Open Source Headless Commerce Backends

Reaction is an event-driven, headless commerce platform designed to decouple backend business logic from the frontend presentation layer. It utilizes an API-first architecture with a GraphQL data layer to manage online sales and retail operations. The platform supports multi-tenant resource sharing, allowing multiple independent storefronts to be hosted and managed within a single installation. It features a plugin-based extension system that enables the integration of third-party services and custom business logic through composable workflows. The system covers core retail capabilities incl

Sylius is a PHP-based digital commerce framework built on Symfony for managing product catalogs, orders, and customer transactions. It functions as an API-first headless commerce engine that delivers store data via REST to decoupled frontend interfaces and external systems. The platform includes a specialized B2B eCommerce framework with tools for managing wholesale operations and corporate pricing. It also acts as a multi-store commerce manager, allowing the coordination of product inventory and sales across multiple digital storefronts from a single installation. The system covers broader

Shopizer is a Java-based e-commerce platform designed for managing digital storefronts. It provides a centralized headless backend that coordinates product catalogs, shopping carts, and order processing workflows. The system is built as a containerized application ready for deployment and scaling within Kubernetes clusters on cloud infrastructure. It utilizes a headless architecture to decouple business logic from the presentation layer via a RESTful interface. The platform covers commerce management through inventory tracking, merchant account coordination, and order fulfillment workflows.

Vendure is a headless commerce framework built with TypeScript and NestJS for managing direct-to-consumer and business-to-business sales channels. It provides a scalable backend for coordinating product catalogs, orders, and payments through a typed and introspectable GraphQL API. The project is distinguished by a modular, plugin-based extension model that allows for the addition of custom entities, pricing rules, and business logic. This extensibility enables the coordination of omnichannel sales and enterprise order orchestration from a single central core. The framework covers broad capab

Lunar is a modular PHP e-commerce framework and headless commerce engine designed to manage the backend logic and data models of an online store. It provides a decoupled infrastructure that separates business logic from the presentation layer, allowing for the orchestration of digital storefronts via an API. The system is distinguished by its headless-first approach and a dedicated toolkit for building customized administration interfaces using pre-made components and widgets. It supports complex global operations through a multilingual commerce system that handles regional storefront configu

Saleor is a composable e-commerce platform and global order orchestrator designed as an extensible commerce backend. It provides a GraphQL headless commerce API that separates core business logic and data management from the presentation layer, allowing for the management of products, orders, and customers without a predefined storefront. The platform is built for multi-channel store management, enabling the independent control of pricing, currencies, and stock across various sales channels and warehouses. It differentiates itself through a modular architecture that integrates custom business

This project is a headless commerce API and a REST-based gateway that exposes e-commerce business logic and product data to decoupled frontend applications. It provides a centralized system for handling online store operations through a set of commerce interfaces. The platform is designed for large-scale marketplace management, featuring a multi-tenant architecture that isolates data for multiple independent vendors, channels, and warehouses within a single installation. It distinguishes itself with an automated subscription billing system for recurring payment cycles and a tiered pricing eng

aimeos-laravel is a comprehensive e-commerce framework for building online stores and B2B marketplaces using the Laravel PHP framework. It functions as a digital storefront engine and multi-tenant e-commerce platform, providing the core logic for managing product catalogs, shopping baskets, and payment processing. The project is distinguished by its ability to support complex business models, including multi-vendor marketplaces and professional B2B commerce suites with tiered pricing and procurement workflows. It also provides a headless commerce API, allowing store data and business logic to

Aimeos is a professional PHP e-commerce framework designed for building online shops and marketplaces. It functions as a modular e-commerce engine that provides a dedicated administration dashboard for managing product data and orders, alongside a headless commerce API using REST and GraphQL interfaces for custom storefronts. The platform is distinguished by its multi-vendor marketplace system, which coordinates multiple sellers, channels, and warehouses. It employs a modular architecture and an interface-based extension pattern, allowing the injection of custom business logic through distrib

Medusa is a headless commerce engine designed as a modular, API-first platform for building custom digital storefronts and business applications. Its architecture is built on a decoupled system where core business logic is encapsulated into independent, swappable modules that communicate through defined interfaces, allowing developers to incrementally adopt or replace components to fit specific operational needs. The platform distinguishes itself through a highly extensible design that supports complex commerce requirements, including multi-vendor marketplace operations, B2B purchasing workfl

Saleor is a headless, API-first commerce platform designed to manage complex retail operations through a decoupled architecture. It provides a centralized backend that uses a GraphQL-based interface to handle product catalogs, order lifecycles, and multi-channel sales across diverse global markets. By separating the commerce engine from the storefront, the platform enables developers to build custom, high-performance shopping experiences while maintaining granular control over data interactions. The platform distinguishes itself through an event-driven architecture that allows for deep extens

This project is a modular e-commerce platform built on Ruby on Rails, designed to serve as a comprehensive engine for managing online retail operations. It provides the foundational infrastructure to handle complex product catalogs, customer order lifecycles, and global payment processing within a unified system. The platform distinguishes itself through a headless, API-first architecture that decouples backend commerce logic from custom frontend storefronts. It supports multi-tenant environments, allowing for the management of multiple independent retail storefronts or marketplaces from a si

This project is a PHP e-commerce platform and enterprise storefront framework designed for building and managing online stores. It functions as a modular PHP application and headless commerce engine, separating e-commerce business logic from frontend presentation to support multiple storefronts and devices. The system is built on a modular architecture that allows developers to add custom business logic and third-party integrations. It utilizes a service-contract-based API to ensure stability across module implementations and employs dependency-injection for object lifecycle management. Core

Vendure is a Node.js e-commerce engine and headless commerce framework built with NestJS and TypeScript. It serves as a multi-channel commerce platform that manages product catalogs, orders, and customers via a strongly typed GraphQL API. The platform is distinguished by its highly extensible architecture, featuring a customizable administrative dashboard where developers can inject custom React components and entity views. It supports multi-channel commerce, allowing the isolation of products, currencies, and regional catalogs from a single unified backend. The engine covers a broad range o

aimeos-core is a PHP e-commerce framework designed for building scalable online stores. It functions as a headless e-commerce engine for managing products, orders, and catalogs, and provides a modular storefront framework and an extensible administration interface. The system utilizes a modular extension architecture that allows for the injection of custom business logic and the addition of new features through plugins without altering the core source code. It employs a decoupled rendering model that separates the administration interface from the customer-facing storefront. The framework pr

Litemall is an open-source e-commerce platform built on Java and Spring Boot that provides a complete retail environment. It includes both a customer-facing storefront and a centralized administrative dashboard, enabling businesses to manage product catalogs, order lifecycles, and member accounts from a single system. The platform distinguishes itself through deep integration with the WeChat ecosystem, offering a mobile-optimized storefront and social authentication for streamlined user access. It utilizes a modular architecture that combines automated database access layers with custom SQL m

This project is a comprehensive e-commerce platform implementation available as a Spring Boot application, a Spring Cloud microservices architecture, and a version rewritten in the Go programming language. It provides a full-stack retail system featuring a Vue 3 storefront interface and a centralized backend administration portal. The platform is specifically designed to handle high-concurrency flash sales and coupon distribution systems to manage sudden spikes in purchase requests. It supports multiple deployment strategies, ranging from monolithic server-side rendering to a decoupled fronte

node-elm is a Node.js and MongoDB backend framework designed for building data-driven applications, specifically e-commerce systems and food delivery management platforms. It provides a foundation for managing product catalogs, shopping carts, and payment workflows. The system includes a dedicated administrative management dashboard for tracking system statistics and managing users and merchants through role-based access control. It also features a digital coupon management system for tracking and exchanging promotional rewards. The framework incorporates geolocation services for IP-based po

nopCommerce is an open-source ASP.NET Core eCommerce platform and shopping cart designed to manage digital product catalogs, orders, and customer transactions. It provides a complete commerce environment consisting of a customer storefront and a backend administration portal. The system functions as a multi-tenant storefront engine capable of distributing workloads across multiple servers and cloud-native hosting environments. Its architecture is based on a plugin-based framework, allowing for the addition of custom plugins and themes to implement specialized business capabilities and visual

Tigshop is a multi-tenant e-commerce framework designed to support single-merchant, multi-merchant, and cross-border retail configurations. It functions as a B2B2C marketplace platform that connects suppliers, store owners, and customers through integrated storefronts and vendor portals. The system is distinguished by an automated revenue splitting engine that divides transaction payments between platforms, merchants, and suppliers based on defined service fee rules. It includes a tiered affiliate distribution system for tracking multi-level commissions and an omnichannel retail manager that

Bagisto is a modular e-commerce platform designed for building and managing scalable online storefronts. It functions as an enterprise-grade toolkit that provides a structured environment for handling complex inventory, secure payment processing, and shipping logistics. Built on a flexible architecture, the platform allows developers to extend core business logic through custom packages and specialized product types. The platform distinguishes itself through a highly modular design that utilizes service-provider-based dependency injection and a repository-pattern data access layer to decouple