SvelteKit
Svelte's full-stack framework. Rich Harris (Svelte creator + Vercel employee). v1.0 Dec 2022. Replaces Sapper. File-system routing, SSR + SSG + SPA modes, server-only code. Standard Svelte app framework.
Svelte 5 (2024) + SvelteKit 2: runes-system (signals-based reactivity), modern adapter system (deploy to Cloudflare/Vercel/Netlify/Node). Load functions: server-side data loading per route. Form actions: server handlers for progressive-enhancement forms. Distinct from Next.js: smaller bundle sizes, simpler mental model, less popular ecosystem. Competitor: Astro (content sites), Solid Start (Solid equivalent). Adoption: 5-10% of modern web projects 2024, but a devoted community. Vercel-sponsored — Rich Harris continues to develop fulltime.