The open source
application stack
for the web

Headless, type-safe, composable tools for building modern web applications that work naturally for developers and reliably for agents

Start with a prompt

15.5BTotal Downloads133,039,817Weekly Downloads127,669GitHub Stars

Principles

Why TanStack?

Our libraries are built around real products and the developers shipping them.

Portable core
Framework Agnostic
Our library cores are provider-agnostic and logic-driven, meaning you can use the same logic in React, Vue, Svelte, Solid, and more.
Compile-time contracts
Type-Safe by Design
Built with TypeScript from the ground up, providing incredible autocomplete and safety across your entire data-fetching and state management stack.
params.postIdstring
query.dataProject[]
form.emailField<string>
Real workloads
Production-Grade
Battle-tested in the world's largest apps. We build for scale, handling complex concurrency, caching, and state synchronization with ease.
npm downloads15,454,619,929
per week133,039,817
github stars127,669
Independent tools
No Vendor Lock-in
Open source and independent. We aren't beholden to any single cloud provider or framework team, ensuring the best tools for the community.
license
MIT
hosting
self-host anywhere
governance
community-driven
paid tiers
none

Read our product tenets

Partners

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Blog & Release Notes

TanStack AI Enters the RC Phase

TanStack AI enters the release candidate phase. The architecture is locked in, with 24 providers, AG-UI, media generation, MCP, sandboxes, and persistence.

Alem Tuzlak, Jack Herrington, and Tom Beckenham · Aug 21, 2026

Inside a TanStack Router Navigation

A navigation looks like one asynchronous operation. Inside TanStack Router, separate owners coordinate matching, loaders, pending UI, redirects, caching, and rendering.

Florian Pellet · Aug 14, 2026