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SPECIFICTION
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Solidus

solidus.io

Free plan Open source WebAPISelf-hosted
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Spec score 8.7 #45 of 280 in Ecommerce platforms

What it is

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.

Spec sheet

What it does
Solidus is a Ruby on Rails e-commerce platform for highly customized online stores.Read 14 Oct 2026 · solidus.io
Product
Solidus is an extensible eCommerce platform for brands, including businesses with unique digital experiences and enterprise brands with complex integrations and customizations.Read 8 Oct 2026 · solidus.io
Free plan
YesRead 20 Sep 2026 · solidus.io
API
The platform exposes REST and GraphQL APIs and allows custom API endpoints.Read 14 Oct 2026 · solidus.io
Integrations
Official integrations include Stripe, PayPal, Braintree, Klarna, Affirm, AfterPay, Avalara, TaxCloud, EasyPost, ShipStation, Klaviyo, Segment, Contentful and Meta.Read 14 Oct 2026 · solidus.io
Security
Solidus versions receive security patches for 18 months after release, and the security policy directs vulnerability reports through its HackerOne disclosure program.Read 8 Oct 2026 · guides.solidus.io
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.Read 8 Oct 2026 · solidus.io
License
The Solidus repository and Ruby gem use the BSD-3-Clause license.Read 14 Oct 2026 · rubygems.org
Abandoned cart recovery
NoRead 20 Sep 2026 · solidus.io
Architecture
Solidus is a Rails engine and a fork of Spree, allowing stores to customize core behavior with configuration hooks, extensions and Rails overrides.Read 14 Oct 2026 · guides.solidus.io
Catalog
Product catalog features include dynamic variants, segmented pricing, product drops, bundles, rich taxonomies, and personalization quizzes.Read 8 Oct 2026 · solidus.io
Checkout
Checkout can be one-step or multi-step and can include offline payments, store credit, upsells, cross-sells and custom data collection.Read 14 Oct 2026 · solidus.io
Current gem release
RubyGems lists Solidus 4.7.0, released April 15, 2026, requiring Ruby 3.2 or newer.Read 14 Oct 2026 · rubygems.org
Customization
The platform lets businesses customize their storefront, business logic, and admin dashboard through its open architecture and API.Read 8 Oct 2026 · solidus.io
Digital products
YesRead 20 Sep 2026 · solidus.io
Documentation
Official documentation includes user and developer guides, Ruby API references, REST API documentation, upgrade guides and a community Slack.Read 14 Oct 2026 · guides.solidus.io
GetApp pricing listing
GetApp lists Solidus as free, with a free version and no published paid starting price.Read 14 Oct 2026 · getapp.com
Independent deployment assessment
An independent review says Solidus generally suits Rails teams needing code-level control but requires Ruby on Rails expertise and a more involved deployment stack.Read 14 Oct 2026 · unsubbed.co
Independent limitation: ecosystem
The same review says Solidus has a smaller community and extension marketplace than Shopify or WooCommerce, making specialist developers harder to find.Read 14 Oct 2026 · unsubbed.co
Independent limitation: hosting price
The independent review notes that managed hosting pricing is contact-sales and there is no simple published monthly plan for small merchants.Read 14 Oct 2026 · unsubbed.co
Installation
A Rails app can install Solidus with bundle add solidus followed by bin/rails generate solidus:install.Read 14 Oct 2026 · guides.solidus.io
International commerce
Solidus advertises multi-store, multi-language, multi-currency, global taxation and logistics capabilities.Read 14 Oct 2026 · solidus.io
Inventory and fulfillment
Inventory functions cover backorders, split shipments, international fulfillment, complex returns, refunds, exchanges and WMS or 3PL connections.Read 14 Oct 2026 · solidus.io
Limit: dated interface
G2 reviewers describe the admin or overall interface as dated and say it needs modernization.Read 14 Oct 2026 · g2.com
Limit: deployment complexity
G2 reviewers report that deployment and initial setup can be difficult for beginners and may require ongoing maintenance.Read 14 Oct 2026 · g2.com
Limit: documentation
Several G2 reviewers say documentation and examples are less readily available than Shopify's, increasing setup and launch time.Read 14 Oct 2026 · g2.com
Limit: operational issues
G2 feedback mentions intermittent glitches, delayed action history, difficult order cancellation in some integrations, multi-step returns and limited exchanges.Read 14 Oct 2026 · g2.com
Maker governance
GitHub identifies Nebulab as Solidus's main code contributor and project director, with the project supported by donated developer time and funding.Read 14 Oct 2026 · github.com
Maker organization
LinkedIn describes Solidus as a nonprofit software-development organization with 2–10 employees and headquarters listed as The Internet.Read 14 Oct 2026 · linkedin.com
Marketplace support
Marketplace tooling includes merchant storefronts, mixed carts, split shipments, managed payouts, merchant dashboards and granular permissions.Read 14 Oct 2026 · solidus.io
Open-source model
The project is free and open source and is maintained by contributors under Nebulab's direction.Read 14 Oct 2026 · github.com
Praise: flexibility
G2 reviewers repeatedly praise Solidus for customization, extensibility, integrations and control over catalog, checkout and subscriptions.Read 14 Oct 2026 · g2.com
Praise: usability
G2 reviewers describe the interface as easy to navigate and say order tracking, customer support workflows and promotions are straightforward.Read 14 Oct 2026 · g2.com
Pricing model
Solidus Cloud uses resource-based pricing, and the site directs prospective customers to contact sales rather than listing plan prices.Read 8 Oct 2026 · solidus.io
Product catalog
Catalog tools include dynamic variants, segmented pricing, product drops, bundles, rich taxonomies and personalization quizzes.Read 14 Oct 2026 · solidus.io
Promotions
Its promotions engine supports custom rules and actions, code activation, time-limited offers, site sales and gift-with-purchase campaigns.Read 14 Oct 2026 · solidus.io
Rating on G2
4.3 out of 5 from 14 reviewsRead 14 Oct 2026 · g2.com
Rating on GetApp
5.0 out of 5 from 1 reviewRead 14 Oct 2026 · getapp.com
Ruby components
The standard installation is composed of solidus_core, solidus_backend and solidus_api gems, with an optional starter storefront.Read 14 Oct 2026 · guides.solidus.io
Sales channels
multichannelRead 20 Sep 2026 · solidus.io
SDK and extensibility
The repository provides a solidus_dev_support gem for writing extensions and maintains a separate extensions directory.Read 14 Oct 2026 · github.com
Security response
The security team aims to acknowledge a vulnerability report and contact the reporter within five days, with subsequent progress updates at least every five days.Read 8 Oct 2026 · guides.solidus.io
Security support
Supported Solidus versions receive security patches for 18 months after release, with vulnerability reports handled through HackerOne and GitHub advisories.Read 14 Oct 2026 · guides.solidus.io
Self-hosting
The DIY Edition lets operators run the complete platform on their own infrastructure, while Solidus Cloud manages hosting.Read 14 Oct 2026 · solidus.io
Subscriptions
Native subscriptions connect with payment methods, checkout, promotions and fulfillment, with subscriber-only offers, memberships and automatic dunning.Read 14 Oct 2026 · solidus.io
System requirements
The installation guide requires Ruby, Rails, a relational database such as PostgreSQL or MySQL, and libvips or ImageMagick for image processing.Read 14 Oct 2026 · guides.solidus.io
Taxation
The platform supports per-product taxation, VAT, GST, sales tax, automated filing, refund management and customer exemptions.Read 14 Oct 2026 · solidus.io
Transaction fee
noneRead 20 Sep 2026 · solidus.io

Plans and prices

DIY Edition Free bring your own infrastructure · full Solidus platform · self-managed maintenance Read 14 Oct 2026 · solidus.io
Enterprise Cloud Priced on request expedited upgrades · tailored or BYO infrastructure · standard monitoring with domain-specific monitoring · 24/7 critical support · 20 solutions-architect hours/month · active incident response Read 14 Oct 2026 · solidus.io
Starter Cloud Priced on request managed upgrades and infrastructure · standard monitoring · weekday web/email support · 10 solutions-architect hours/month Read 14 Oct 2026 · solidus.io

Every Solidus plan and price →

Strong points and limits

Strong points

  • Open architecture and API enable extensive customization
  • Supports multichannel sales and digital products
  • Native subscriptions connect to checkout and fulfillment
  • No transaction fee is listed

Limits

  • No abandoned cart recovery
  • DIY Edition requires your own infrastructure

Who it suits

Solidus suits brands that need extensive storefront, catalog, fulfillment, tax, or subscription customization. The DIY Edition may suit teams prepared to provide their own infrastructure; cloud support options are listed for businesses that need them.

Verdict

Solidus specifies a broad set of commerce, fulfillment, tax, promotion, and subscription capabilities. The DIY Edition is free, while prices for the listed cloud plans are not provided.

Where Specifiction places it

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