| Bootstrap | 19,831 | https://getbootstrap.com |
| shadcn-svelte | 2,625 | https://www.shadcn-svelte.com |
| ZURB Foundation | 1,676 | https://foundation.zurb.com |
| UIKit | 589 | https://getuikit.com |
| Ant Design | 159 | https://ant.design |
| Tailwind CSS | 148 | https://tailwindcss.com/ |
| USWDS | 142 | https://designsystem.digital.gov |
| Pure CSS | 112 | https://purecss.io |
| Material Design Lite | 92 | https://getmdl.io |
| Element UI | 90 | https://element.eleme.io/ |
| GOV.UK Frontend | 83 | https://design-system.service.gov.uk/ |
| Semantic UI | 57 | https://semantic-ui.com/ |
| MDBootstrap | 24 | https://mdbootstrap.com |
| Materialize CSS | 22 | https://materializecss.com |
| Kendo UI | 12 | https://www.telerik.com/kendo-ui |
| Radix UI | 11 | https://www.radix-ui.com |
| Flowbite | 9 | https://github.com/themesberg/flowbite |
| Animate.css | 8 | https://animate.style |
| Angular Material | 7 | https://material.angularjs.org |
| Headless UI | 5 | https://headlessui.dev |