Open Source Ruby eCommerce Software for Windows

Spree Commerce is a complete, free and open source e-commerce solution built with Ruby on Rails. It offers a modern, mobile-first UX, optional PWA frontend, REST API, plus many official extensions and third-party integrations. Spree Commerce offers plenty of advantages in terms of user experience, business value and security. Because of its mobile-first approach, it offers a truly smooth UX on every device, be it mobile or desktop. It’s got amazing page load speed and SEO; fast and easy installation, customization and configuration; options for flexibility and scalability; as well as mature underlying technology that ensures maximum security and compliance. It’s been downloaded over a million times, helping numerous businesses achieve success.

Coupa e-Procurement is a requisition and purchase order system with best-in-class usability. Built to manage employee purchasing, it includes catalog management, shopping cart buying, approvals, purchase orders and more. Built in Ruby on Rails.

Cassiopeia is an open source shopping cart system written in Ruby programming language.

Web-based software to manage a non-profit food coop (product catalog, ordering, accounting, job scheduling). A food cooperative is a group of people that buy food from suppliers of their own choosing. A collective do-it-yourself supermarket. Members order their products online and collect them on a specified day. And all put in a bit of work to make that possible. Foodsoft facilitates the process.

This repository contains the source code for Gumroad’s e-commerce platform, exposing how a modern creator-focused storefront and payments system is assembled. The app models products, variants, subscriptions, and checkout flows, then ties them to fulfillment, licensing, and customer communications. It implements typical marketplace concerns—order management, refunds, discounts, taxes, fraud checks, and analytics—through well-defined services and background jobs. The UI offers product pages, carts, and dashboards for creators to manage listings and see performance, while APIs/webhooks enable integrations with external sites and automation. The codebase demonstrates practical patterns for multi-tenant architecture, permissions, testing, and asynchronous processing at scale. For engineers, it’s both a working marketplace and a study in how to balance flexibility for creators with reliability in payments and delivery.

Billing system solution. Library for credit card/ACH processing, recurring billing and subscription management for member and donor centered organizations. Provides a way for POS / retail / recurring credit card and bank account processing.

Sharetribe develops advanced marketplace software for every stage of your business life cycle. Whether you're just starting out with your online marketplace idea, or taking the next big step in your booming marketplace business, Sharetribe has all the tools you need to get to where you need to be. Sharetribe Go is Sharetribe's source available marketplace software, available as a hosted, no-code SaaS product that comes with a complete feature set to get you started on your marketplace for rentals, services, events, or products. For those looking for a more customized build, there's Sharetribe Flex. Flex is an API-based, customizable and extendable marketplace solution that allows you to develop your marketplace using your preferred programming language, build a mobile app, integrate third party services and more. Building with Sharetribe is quick and easy, so you can launch your business within a day and expand it on demand.