23rd

23rd is an opinionated shadcn/ui registry of atmospheric pieces rather than everyday controls: shader gradients, fire and sky, ASCII fluids and logos, a live orb, a stretchy footer, a dithered 404 page and a gooey colour picker. Every component ships for both React and Svelte 5, installs with the shadcn CLI or straight from its public GitHub registry, and the docs give practical advice on keeping shaders behind content. Svelte versions install under an @23rd name with a -svelte suffix and land in src/lib/components/ui, so $lib imports resolve without changes.