Solidus

Solidus is an open-source eCommerce framework built on Ruby on Rails for teams that need full control over their online store and the ability to customize deeply. It provides core commerce capabilities, an admin backend, and an API, and can be used as a full storefront or as commerce components within a larger stack.

Key Features

• Modular architecture delivered as multiple gems (core, backend/admin, API)
• Admin dashboard for catalog, orders, customers, and store operations
• REST API for integrating custom storefronts, mobile apps, or headless setups
• Flexible promotions and discounting system with customizable rules
• Support for subscriptions via its native subscription engine
• Internationalization and localization support across store and operational components
• Extensible integration approach for payments, shipping, and third-party services

Use Cases

• Build a fully customized eCommerce store on Rails with an integrated admin
• Run headless commerce by pairing Solidus with a bespoke frontend
• Implement advanced business models such as subscriptions and complex promotions

Solidus is a mature, extensible Rails-based commerce foundation that fits teams seeking long-term flexibility, customization, and the option to evolve toward more decoupled architectures as they scale.