Garden is Zendesk's open-source design system, growing accessible components for its entire product suite since May 2018, deliberately blurring the line between design, content strategy, and engineering into one shared practice.
It documents "opinionated design recipes" that combine best practices from content, design, and engineering together for a given UI problem, rather than treating those three disciplines as separate handoffs, worth studying as a model for genuinely cross-functional documentation.
Designers and developers wanting a real example of content strategy and engineering guidance merged directly into design system documentation, not kept in separate silos.
It's been open source since 2018 with a large, actively maintained GitHub organization, worth checking directly for the current component versions before adopting.
Zendesk's own library of UI components.