Storybook
Under https://mosaic-storybook.axinom.net/ you can find a living demonstration for all UI components used in Mosaic.
Mosaic Storybook
For Mosaic Storybook we use https://storybook.js.org/ - a frontend workshop for building UI components and pages in isolation. Thousands of teams use it for UI development, testing, and documentation. It’s open source and free.