The open source application stack for the web

12.7BTotal Downloads143,645,690Weekly Downloads126,150GitHub Stars

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

Start with a prompt

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 downloads12,721,123,633
per week143,645,690
github stars126,150
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

Gold

Silver

Bronze

OSS Sponsors

Sponsors get special perks like private discord channels, priority issue requests, and direct support!

Become a Sponsor

View Previous Partners

Latest Blog Posts

Introducing TanStack Markdown and TanStack Highlight

by Tanner Linsley on Jul 24, 2026

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.

We Stopped Using RSC on TanStack.com

by Tanner Linsley on Jul 24, 2026

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.

Inside TanStack Table V9 Reactivity

by Riccardo Perra on Jul 19, 2026

TanStack Table V9 moves state and options behind reactive primitives so updates stay within the scopes that consume them. Here is the path we took to get there.

View All Posts