Solidus
Flexible Ruby on Rails e-commerce — full control, zero licensing fees.
BSD-3-Clause fork of Spree for stability and customization. Modular gems (core, backend, API), custom storefronts, and Stripe/PayPal/Braintree integrations.
Spree Commerce is itself a free, open-source, Ruby on Rails e-commerce platform (BSD-3-Clause licensed) — it's not a proprietary product, so teams typically look for alternatives when they want a different tech stack, not because of licensing or cost concerns.
Solidus is actually a fork of Spree itself, maintained independently, and is worth comparing directly if you're evaluating Rails-based commerce platforms.
FAQ
Is there a free, open-source alternative to Spree?
Yes. Solidus is open source (BSD-3-Clause) and free to self-host — it's a direct fork of Spree with independent maintenance.
What's the best open-source alternative to Spree?
Solidus is the natural comparison since it started as a fork of Spree itself, aimed at giving enterprise Rails shops more stability and control over the platform's direction.
What are the top open-source alternatives to Spree?
Browse all open-source alternatives to Spree above, or explore the full Commerce category for more options.