The official TanStack website
TanStack is a collection of high-quality, open-source TypeScript/JavaScript libraries for building modern web applications. The projects emphasize type safety, framework-agnostic design, and a "headless" philosophy—providing robust logic and state management without prescribing UI implementation. Libraries typically offer adapters for multiple frontend frameworks, allowing developers to use consistent patterns across different ecosystems. TanStack has gained significant enterprise adoption by focusing on reducing complexity while maintaining flexibility and performance.
