Unchained Engine

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Score6.8

Rank#5 of 28

PriceFree

Free planYes

Runs onAPI, Self-hosted, Web

Summary

Unchained Engine is a free, open-source headless e-commerce platform built with Node.js and GraphQL. By separating the frontend from the backend, it can power web, mobile, IoT, and social commerce from one backend, and is described for uses ranging from simple stores to complex B2B marketplaces. Commerce modules cover product catalogs, orders, payments, delivery, warehousing, and role-based user authentication. Developers get a GraphQL API, TypeScript support, a built-in playground, hot module reloading, and a plugin system. Listed integrations include Stripe, PayPal, Datatrans, SendGrid, Mailchimp, Twilio, DHL, UPS, AWS S3, Google Cloud, and Cloudinary. Security features include WebAuthn/passkeys, encrypted sessions, role-based access control, and payment tokenization that keeps card data off the platform servers. The platform can be self-hosted and is Docker-ready for Docker or Kubernetes environments. It is free under EUPL terms without licensing or per-transaction fees, though users pay for hosting infrastructure; distributed modifications must use compatible open-source terms.

Who it is for

Unchained Engine suits developers and businesses building stores or B2B marketplaces that need a headless commerce backend. It may fit teams seeking self-hosting, GraphQL development tools, and the listed commerce integrations.

What is good

Free with no licensing or per-transaction fees
Supports self-hosting and Docker-ready deployment
Includes commerce modules for orders and warehousing
Integrates with listed payment and delivery services

What to know first

Users pay for hosting infrastructure
Distributed modifications must use compatible open-source terms

Verdict

Unchained Engine combines a headless commerce backend with development tools, commerce modules, and listed integrations. Review its self-hosting costs and EUPL requirements, especially for distributed modifications.

Unchained Engine plans and pricing

All plans

Unchained Engine Free 100% free and open-source · no licensing or per-transaction fees · hosting infrastructure is paid by user unchained.shop · 3 Oct 2026

Compared on headless ecommerce platforms

Free plan: Yesunchained.shop
Deployment options: bothunchained.shop
API protocols: rest_and_graphqlunchained.shop
B2B commerce: Yesunchained.shop
Subscription products: Yesunchained.shop
Marketplace support: Yesunchained.shop
Inventory management: Yesunchained.shop

Facts

What it is: Unchained Engine is an open-source, headless e-commerce platform built with Node.js and GraphQL.unchained.shop · 3 Oct 2026
Use cases: The platform is described as suitable for simple stores and complex B2B marketplaces.unchained.shop · 3 Oct 2026
API and development: It provides a GraphQL API, TypeScript support, a built-in GraphQL playground, hot module reloading, and a plugin system.unchained.shop · 3 Oct 2026
Commerce features: Its listed modules include product catalogs, orders, payments, delivery, warehousing, and user authentication with role-based access control.unchained.shop · 3 Oct 2026
Integrations: Listed integrations include Stripe, PayPal, Datatrans, SendGrid, Mailchimp, Twilio, DHL, UPS, AWS S3, Google Cloud, and Cloudinary.unchained.shop · 3 Oct 2026
Headless architecture: The engine separates the frontend from the backend and says it can power web, mobile, IoT, and social commerce from one backend.unchained.shop · 3 Oct 2026
Security: The features page lists WebAuthn/passkeys, role-based access control, encrypted sessions, and payment tokenization that keeps card data off the platform servers.unchained.shop · 3 Oct 2026
Compliance support: The features page says its structured OCSF audit logging is compatible with SOC 2, GDPR, and HIPAA compliance reporting.unchained.shop · 3 Oct 2026
Deployment: The engine can be self-hosted and the maker says it is Docker-ready for deployment on Docker or Kubernetes environments.unchained.shop · 3 Oct 2026
Open-source terms: The FAQ says the software is free under the EUPL, with no licensing or per-transaction fees, and that distributed modifications must use compatible open-source terms.unchained.shop · 3 Oct 2026
Support: The maker offers contact by email and Discord, and says commercial support, implementation, and custom development services are available through unchained.ch.unchained.shop · 3 Oct 2026
Company location: Unchained Commerce GmbH lists its address in Zürich, Switzerland.unchained.shop · 3 Oct 2026