The open source
the 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 Downloads126,510GitHub 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 stars126,510
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 Has a New Look

TanStack has a new logo, a design system, and a brand that finally looks like actual people care about the details, because we do.

Tanner Linsley · Jul 29, 2026

Introducing TanStack Markdown and TanStack Highlight

TanStack Markdown and TanStack Highlight are two tiny, synchronous libraries for turning technical content into deterministic, themeable webpages without shipping a general-purpose publishing system.

Tanner Linsley · Jul 24, 2026

We Stopped Using RSC on TanStack.com

React Server Components solved a real performance problem for tanstack.com, but once our markdown and highlighting stack got small, we were left with a set of runtime and code-shape tradeoffs we didn't want anymore.

Tanner Linsley · Jul 24, 2026

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