Solidus vs Unchained Engine
Solidus
solidus.io
Unchained Engine
unchained.shopSide by side
| Figure | Solidus | Unchained Engine |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 3 | 1 |
| Spec score · Headless Ecommerce Platforms | 8.3 (#10) | 7.3 (#22) |
| Integrations | Official integrations include Stripe, PayPal, Braintree, Klarna, Affirm, AfterPay, Avalara, TaxCloud, EasyPost, ShipStation, Klaviyo, Segment, Contentful and Meta. | Listed integrations include Stripe, PayPal, Datatrans, SendGrid, Mailchimp, Twilio, DHL, UPS, AWS S3, Google Cloud, and Cloudinary. |
| Security | Solidus versions receive security patches for 18 months after release, and the security policy directs vulnerability reports through its HackerOne disclosure program. | The features page lists WebAuthn/passkeys, role-based access control, encrypted sessions, and payment tokenization that keeps card data off the platform servers. |
| Support | Enterprise Cloud includes 24/7 support for critical incidents through web, email, Slack, and phone; Starter Cloud support is available on weekdays from 9am–5pm EST via web and email. | The maker offers contact by email and Discord, and says commercial support, implementation, and custom development services are available through unchained.ch. |
Plans
Solidus
- DIY EditionFree
- Enterprise CloudPriced on request
- Starter CloudPriced on request
In their own words
Solidus
Solidus is an eCommerce platform for brands that need control over storefronts, business logic, and administration. Its open architecture and API let businesses tailor all three, including for distinctive digital experiences or complex enterprise integrations. Catalog tools include dynamic variants, segmented pricing, product drops, bundles, rich taxonomies, and personalization quizzes. Inventory and fulfillment features cover backordering, split shipments, global fulfillment, WMS or 3PL connections, exchanges, and self-serve returns. Tax support includes per-product rules, VAT, GST, sales tax, automated filing, refunds, and customer exemptions. Businesses can configure promotions and checkout, from time-based offers to one-click or multistep flows. A native subscription engine connects payment methods, promotions, checkout, and fulfillment. Solidus runs via API, on the web, or self-hosted, and supports multichannel sales. The DIY Edition is free; businesses supply their own infrastructure. No transaction fee is listed, and abandoned cart recovery is not available.
Unchained Engine
Unchained Engine is a free, open-source, headless e-commerce platform built with Node.js and GraphQL. Its backend can serve web, mobile, IoT, and social commerce while the frontend remains separate. The maker describes it for simple stores and complex B2B marketplaces. Modules cover 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 plugins. Integrations include Stripe, PayPal, Datatrans, SendGrid, Mailchimp, Twilio, DHL, UPS, AWS S3, Google Cloud, and Cloudinary. Security listings include WebAuthn/passkeys, encrypted sessions, role controls, and payment tokenization that keeps card data off platform servers. It can be self-hosted and is Docker-ready for Docker or Kubernetes. The EUPL software costs nothing; hosting infrastructure is paid by the user and distributed modifications must use compatible open-source terms.