Solidus is a Ruby‑on‑Rails, open‑source eCommerce platform focused on flexibility and customisation. Below is a curated list of 20 free (open‑source or free‑tier) eCommerce solutions that can serve as alternatives for building online stores, marketplaces, or headless commerce experiences.
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A mature, Ruby‑on‑Rails based eCommerce framework offering a modular architecture, extensive extensions, and a vibrant community.
A high‑performance, GraphQL‑first, headless commerce platform built with Python/Django, ideal for modern storefronts.
A JavaScript/Node.js headless commerce engine that provides a flexible API, plugin system, and easy integration with any front‑end.
A Symfony‑based, PHP eCommerce framework designed for developers who need a highly customisable solution.
Adobe’s flagship open‑source eCommerce platform offering a rich feature set, robust extensions marketplace, and strong community support.
A widely‑used PHP eCommerce solution with a large module ecosystem, multilingual support, and an intuitive back‑office.
A lightweight, PHP‑based shopping cart system that’s easy to set up and extend via thousands of extensions.
The leading WordPress plugin that turns any WordPress site into a fully functional online store.
A German‑origin, PHP‑based platform offering a modern API, flexible storefronts, and a strong developer community.
An ASP.NET Core eCommerce solution with a modular architecture, multi‑store support, and a large marketplace of plugins.
A Laravel‑based open‑source eCommerce framework that includes multi‑vendor capabilities and a clean admin UI.
Part of the Odoo ERP suite, this module provides a seamless integration between eCommerce, inventory, and accounting.
A flexible eCommerce framework built on the Drupal CMS, enabling content‑driven commerce experiences.
A modern, headless eCommerce framework written in TypeScript/Node.js, featuring a GraphQL API and plugin system.
An open‑source, real‑time commerce platform built with Meteor and Node.js, focusing on modularity and extensibility.
A headless PWA storefront that can be paired with any backend (e.g., Magento, Shopify, or custom APIs) for a fast, mobile‑first UI.
A JavaScript SDK for building headless commerce experiences; offers a generous free tier for small projects.
A headless commerce & PIM platform with a free developer tier, providing GraphQL APIs for product, catalog, and checkout.
A headless commerce solution with a free community edition, delivering API‑first architecture for complex B2B/B2C scenarios.
A modular, PHP‑based commerce framework offering a free community edition for startups and developers.