Smelte

Smelte was an early pioneer in combining Material Design with Tailwind CSS for Svelte. At its peak, it offered a compelling proposition: Google’s well-known design language implemented with utility-first CSS, making customization more approachable than traditional Material libraries.

The library provided around 25 components covering common patterns — buttons, cards, text fields, selects, navigation drawers, data tables, snackbars, and more. The implementation included nice touches like Material Design’s signature ripple effects on interactive elements and smooth transitions between states.

However, Smelte is no longer actively maintained. The last meaningful commits were in 2023, and the library has not been updated for Svelte 5. This means no runes support, no updated Svelte compiler compatibility, and no security patches for dependencies. For any new project, Smelte should not be on your shortlist.

The lack of TypeScript support is another limitation that was acceptable in 2020 but feels like a significant gap by today’s standards. Modern Svelte development overwhelmingly favors TypeScript, and the absence of type definitions means no autocomplete, no prop validation, and no compile-time error checking.

If you are working on a legacy Svelte 4 project that already uses Smelte, it will continue to function. However, planning a migration to an actively maintained alternative is advisable. Svelte Material UI (SMUI) offers a more comprehensive Material Design implementation that is still actively developed. For teams open to non-Material aesthetics, shadcn-svelte or Skeleton provide better developer experiences overall.

Smelte deserves credit for demonstrating that Tailwind and Material Design could work together in Svelte. Many of the patterns it established influenced later libraries. But as a practical choice for building software today, it has been surpassed by the ecosystem that grew around it.