TanStack is an open-source application stack for the web, best known for headless, framework-agnostic libraries that developers can drop into almost any front-end project. Rather than prescribing a single framework, it provides powerful building blocks such as data querying, tables, routing, forms, and virtualization that work across React, Vue, Solid, Angular, and Svelte.
The flagship library, TanStack Query, manages server state, caching, synchronization, and background updates so applications feel instant even when data changes frequently. By moving data-fetching concerns out of components, it lets teams write clearer UI code while still enjoying retries, pagination, and stale-while-revalidate behavior with minimal configuration.
TanStack Table brings a headless approach to complex grids, giving developers full control over rendering while the library handles sorting, filtering, grouping, and row selection. Because it is unopinionated about markup, teams can match any design system and keep accessibility and styling entirely in their own hands, which avoids the lock-in of traditional grid widgets.
Beyond data and tables, the project covers routing, forms, charts, and virtualized lists, forming a coherent toolkit that shares the same pragmatic, type-safe philosophy. Strong TypeScript support and thorough documentation make the libraries approachable, while the headless design keeps them lightweight and easy to integrate into existing architectures.
Trusted by teams building serious data-driven interfaces, TanStack has become a standard choice for applications where performance and flexibility matter more than a bundled user interface. Its open-source, community-driven model and framework neutrality make it a durable foundation that adapts as front-end technology evolves, without forcing a single ecosystem on its users. The project also emphasizes developer experience through consistent APIs and sensible defaults, so the same patterns apply whether you are building a small dashboard or a large enterprise application. Because the libraries are headless, designers and engineers retain full creative control, and the result tends to be more accessible, more testable, and easier to maintain over time.