SiteDesign Systems & Foundations · Public design systems
Heartbeat Agency's open design system aimed at agency teams, with components, tokens and a lightweight governance model.
Why it’s a gem
Agency-scale system sized for client work rather than a 500-person org.
Trello's design system documenting board, card and drag-and-drop interaction patterns alongside its visual foundations.
SEEK's design system where components are constrained by design tokens so invalid layouts are literally uncompilable in TypeScript.
JSTOR's design system with web components, editorial typography rules and academic-content layout patterns.
LocalTapiola's insurance design system with web components, WCAG 2.1 AA conformance evidence and Finnish-language content rules.
Loom's design system documenting components, motion and the video-capture product surfaces behind the app.
Artsy's React and React Native design system with an art-world visual language and shared cross-platform primitives.