GOV.UK Design System vs U.S. Web Design System
GOV.UK Design System
design-system.service.gov.uk
U.S. Web Design System
designsystem.digital.govSide by side
| Figure | GOV.UK Design System | U.S. Web Design System |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 1 |
| Spec score · UI Kit Libraries | 7.9 (#9) | 7.1 (#24) |
| Components | It provides reusable interface components with usage guidance and coded examples. | The system includes components with user experience, accessibility, and implementation guidance. |
| Purpose | The system helps teams make government services consistent with GOV.UK and learn from research and experience across service teams. | USWDS is a toolkit of principles, guidance, and code for building accessible, mobile-friendly government websites. |
| Support | The team focuses support on central UK government digital services and says it cannot reliably provide guidance for different contexts. | Users can ask questions in GitHub Discussions or email the USWDS team at [email protected]. |
Plans
In their own words
GOV.UK Design System
The GOV.UK Design System helps government teams build services with shared styles, reusable components and patterns for user-focused tasks. Its guidance covers page structure, typography, colour and images; components include coded examples, and patterns address particular tasks and page types. Published guidance includes details about user-research testing. Teams can add GOV.UK Frontend through npm or include compiled files. In production projects, components can be used as HTML or as Nunjucks macros when Frontend is installed with npm and the application uses Node.js. Prototyping requires GOV.UK Prototype Kit version 7 or later. The code is public under the MIT License, and the listed plan is free. The system aims for WCAG level AA compliance, but its use alone does not make a service accessible; component accessibility checks combine tools, automated deployment tests and manual testing. The Government Digital Service maintains the system, with a focus on central UK government digital services. Support may be limited for other contexts. Compiled files include all Frontend CSS and JavaScript, without selective component assets or a customizable build.
U.S. Web Design System
U.S. Web Design System (USWDS) is an open-source toolkit for government teams creating accessible, mobile-friendly websites. It combines principles, guidance, and code with components that include user-experience, accessibility, and implementation guidance. Teams get patterns, design tokens, utilities, and page templates, then install and compile the system to customize projects. Node and npm are the recommended setup, and USWDS can be added as an npm dependency. Downloadable design kits support Figma and Sketch. USWDS says its guidance and code address Section 508 and 21st Century IDEA requirements from the outset. Version 3.0 supports Chrome, Firefox, Safari, and Edge, but not Internet Explorer 11. Security practices include Snyk dependency checks, CodeQL analysis, release vulnerability reports, and patches for 1.x and 2.x branches. It is free to download and self-host.