WooCommerce

Medusa

Medusa is a flexible, API‑first commerce engine that lets developers build custom shopping experiences without vendor lock‑in. It runs on Node.js and can be self‑hosted, giving full control over performance, data, and integrations. With a modular plugin system and out‑of‑the‑box support for popular payment providers, Medusa enables rapid development of scalable, multi‑channel storefronts while keeping costs low.

Shift4Shop

Shift4Shop (formerly 3dcart) is a hosted SaaS e-commerce platform that lets businesses build an online store, manage inventory, process payments, and handle shipping from a single integrated system. It includes a drag-and-drop website builder with over 100 customizable themes, along with a free domain and SSL certificate. The platform bundles real-time shipping integrations with major carriers, AI-driven fraud protection powered by Kount, and built-in SEO tools. Shift4Shop targets small to mid-sized businesses launching or migrating online stores, and it markets its unlimited-tier plan as a lower-cost alternative to enterprise e-commerce platforms.

ever-demand

Ever Demand is an open-source commerce platform designed to help businesses build and manage their e-commerce operations efficiently. It provides a flexible and customizable solution for creating online stores, managing inventory, and processing payments.

PrestaShop

PrestaShop is an ecommerce platform that lets merchants build and manage online stores with full ownership of their data and storefront. It offers a free, open-source Classic download for self-hosting, plus thousands of modules and themes for customization, alongside a managed Hosted option for merchants who want infrastructure handled for them.

opensourcepos

OpenSourcePOS is a lightweight, web‑based point‑of‑sale system built with PHP, CodeIgniter and MySQL. It runs on any web server, giving merchants full control over their data and customization. The software is completely free and open source, making it ideal for cost‑conscious small to medium‑sized businesses. Its intuitive interface covers sales, inventory, customer management, and reporting without the need for costly licenses.

Ecwid

Ecwid is an ecommerce platform built around centralized inventory and order management, letting merchants sell the same product catalog across their own website, social channels, and online marketplaces from one dashboard. It plugs into existing sites built on WordPress, Wix, Squarespace, Drupal, and Joomla, and connects sales channels including Instagram, TikTok, Facebook, Google, Pinterest, and Amazon. The platform automates shipping, tax calculation, and payment processing, and includes email marketing, discount automation, and AI-powered product photo enhancement. All plans advertise no transaction fees, with pricing tiers differentiated mainly by product count, staff accounts, and features like abandoned cart recovery and point-of-sale integration.