Free CDNs for serving npm packages, JavaScript modules, and static assets directly in the browser without a build step.

- **[esm.sh](https://esm.sh/)** — CDN that serves npm packages as native ES modules; supports TypeScript types and import maps
- **[jsDelivr](https://www.jsdelivr.com/)** — fast CDN for npm and GitHub packages; supports version ranges and file combining
- **[cdnjs](https://cdnjs.com/)** — community-maintained CDN for popular open-source libraries; straightforward URL scheme
- **[unpkg](https://unpkg.com/)** — instant CDN for any npm package; useful for quick prototyping without installing dependencies