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 Downloads126,644GitHub 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 stars126,644
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

Announcing TanStack Table V9

TanStack Table V9 is here with a tree-shakable feature architecture, fine-grained reactivity, improved performance, and first-class support for more frameworks.

Kevin Van Cott · Aug 4, 2026

Surviving the refresh

A user reloads mid-answer and three things break: the transcript, the stream, and the agent doing the work. TanStack AI now ships chat persistence, resumable streams, generation persistence and durable sandboxed agent runs, plus server-side memory, rebuilt interrupts and multi-instance locks.

Alem Tuzlak · Aug 4, 2026