Vendure is a mature, open-source headless commerce platform built on NestJS, GraphQL, and TypeORM. It provides a complete backend for e-commerce operations including product catalog management, order lifecycle, payment/shipping/tax processing, promotions, and multi-channel support. The monorepo contains a core backend package, two parallel admin UIs (an older Angular-based admin-ui and a newer React-based dashboard), a CLI tool for scaffolding and migrations, and a plugin ecosystem with official plugins for email, asset server, job queues (BullMQ), caching (Redis), telemetry (OpenTelemetry), and AI integration via the MCP (Model Context Protocol) plugin. The architecture is modular with a strategy pattern for extensibility, an event bus for domain events, a job queue system, and a custom fields system. The codebase demonstrates strong engineering practices with extensive test coverage, CI/CD pipelines, and active maintenance. Notable reusable components include a generic finite state machine framework, a runtime-resolved custom fields system, an OAuth 2.1 authorization server, a dynamic form engine, and a tag-based cache invalidation service.
Sylius is a mature open-source e-commerce framework built on Symfony, organized as a monorepo of decoupled PHP bundles and domain components. In production it powers multi-channel, multi-currency, multi-locale storefronts with product catalogs, carts and checkout, order management, payments via Payum, taxes, shipping, promotions and coupons, inventory, customer accounts, and an admin panel. It exposes a JSON:API via API Platform for headless commerce, a Twig/Stimulus storefront, an admin interface, and CLI commands for installation, user management, and maintenance. The domain logic lives primarily in the Sylius Component and Bundle layers, with UI and API layers acting as adapters over shared services.
Medusa is a headless commerce platform built as a modular monorepo. It provides a comprehensive backend with REST APIs for admin and storefront operations, a React-based admin dashboard, a workflow engine for orchestrating business processes (orders, returns, claims, etc.), and a plugin system for extending functionality. The architecture is domain-driven: each commerce domain (cart, order, product, pricing, payment, fulfillment, inventory, tax, promotion, customer, region, etc.) is an independent module with its own models, migrations, services, and workflows. The admin dashboard is a React SPA using TanStack Query, react-hook-form, and a custom data grid with virtual cells and clipboard support. The platform relies on PostgreSQL (via MikroORM) and optionally Redis for caching and workflow execution. It includes a design system with SVG icons and UI components, a JS SDK for client-side integration, and extensive documentation sites built with Next.js. The monorepo also contains CLI tools for project scaffolding, code generation, and API reference generation.
Bagisto is a production-ready open-source eCommerce platform built on Laravel with a modular monolith architecture. It provides a complete admin panel and storefront for managing multi-channel, multi-locale, multi-currency online stores. The system supports a wide range of product types (simple, configurable, bundle, grouped, downloadable, virtual, booking), payment gateways (Stripe, PayPal, Razorpay, PayU, PhonePe, PayGlocal), marketing promotions (cart rules, catalog rules), full-page caching, Elasticsearch integration, GDPR compliance, EU withdrawal management, RMA (returns), data import/export, and AI-powered features (MagicAI). The architecture is event-driven with listeners for cache invalidation, notifications, and indexing. The admin panel uses Vue 3 components with Blade templates, while the storefront is built with Tailwind CSS and Vue. The codebase is organized into ~40+ packages under packages/Webkul/, each with its own models, repositories, migrations, translations, and tests. Key entry points include the admin routes (packages/Webkul/Admin/src/Routes/web.php), shop routes (packages/Webkul/Shop/src/Routes/), and the installer wizard. The system relies on MySQL, Redis, Elasticsearch, and various external payment/shipping APIs. The core framework (Concord) provides facades for core services, ACL, menu, system config, and Elasticsearch. The DataGrid system offers a reusable abstraction for listing and filtering entities across the admin panel. Notable engineering highlights include the CurrencyFormatter trait for locale-aware currency display, the MediaFileName helper for safe file upload handling, the ForgetsPages trait for full-page cache invalidation, and the DynamicMailTransport for configurable email delivery. The event-driven architecture with listeners and the repository pattern are consistently applied across all modules.
This repository is a starter theme for building headless ecommerce storefronts with Shopify using Astro. It provides a server-rendered Astro application with Svelte islands for interactive components like the cart drawer and add-to-cart form. The application fetches product data from the Shopify Storefront GraphQL API, displays product listings and detail pages, and manages a shopping cart with persistent state via nanostores. It is configured for deployment on Vercel and uses Tailwind CSS for styling. The architecture is a monolithic web application with clear separation of concerns: `src/utils` contains the Shopify API client, GraphQL queries, Zod schemas for runtime validation, and configuration; `src/stores` manages cart state; `src/components` contains Astro and Svelte components for UI. The Shopify client (`src/utils/shopify.ts`) intelligently switches between public and private access tokens based on server/client rendering and includes buyer IP forwarding for accurate pricing. The codebase demonstrates modern practices: TypeScript strict mode, Zod validation of external API responses, Svelte 5 runes, and responsive image generation with srcset. While the theme includes demo content (hardcoded reviews, accordions) and a hardcoded API version (2023-01), the core utilities are well-crafted and reusable. The Shopify API client and image component can be extracted into other projects with minimal changes. Overall, this is a solid, professional-grade starter theme that showcases a clean integration between Astro, Svelte, and Shopify.