TanStack Start

TanStack Start is the full-stack framework wrapped around TanStack Router. It's the most aggressive bet on type safety in React tooling.

Components

• TanStack Router — file-based or code-based routing with fully type-safe params, search, and loader data.
• TanStack Query — same as before, integrated.
• Vinxi / Nitro / Vite under the hood for the server.
• Server functions — typed RPC-like server-only functions you call from anywhere.
• TanStack Form, Table, Virtual — same family, easy to layer on.
• Deploys to Node, Cloudflare Workers, Vercel, Netlify, Bun, Deno.

What it's good at

• End-to-end types without a separate IDL — your loaders, params, and search params are all typed across navigations.
• Search params as state — the router treats them as first-class typed state, ideal for filterable tables / dashboards.
• Client-first — feels like a modern SPA but adds streaming SSR cleanly.
• No App Router weirdness — fewer "where is this code running" surprises than Next.js.

What you give up

• Smaller ecosystem of starters and integrations than Next.js.
• RSC support is newer; not as battle-tested as Next.js.
• Some Vercel-tier features (image optimization, OG image, ISR) you assemble yourself or via plugins.

When to pick

• Heavy client UI: dashboards, editors, internal tools, data-rich apps.
• You loved TanStack Query and Router and want the rest of the family integrated.
• You want the strongest type safety story available in React.

When to skip

• You need maximum library / starter / hosting compatibility — Next.js still wins.
• You want a content-first site — Astro is a better fit.