TanStack Web Application Stack

TanStack is a collection of open-source, headless, and type-safe JavaScript libraries for building web applications, organized into categories covering framework and routing, data and state management, user interface components, rendering performance, and developer tooling. The libraries share a common design philosophy: each library is built on a framework-agnostic core that works with React, Vue, Solid, Angular, and vanilla JavaScript, with framework-specific adapters providing idiomatic hooks and components. Query is the flagship data-fetching library that manages server state through declarative cache management, handling loading and error states, background refetching, optimistic updates, request deduplication, and infinite scrolling without requiring global state stores or complex reducers. Router provides a fully type-safe file-based routing system with nested layouts, search parameter validation through schema definitions, preloads, and server-side rendering support, with the Start meta-framework layering full-stack capabilities on top. Table is a headless data grid that handles sorting, filtering, grouping, pagination, column resizing, row selection, and virtualization through render-prop and hook APIs, giving developers complete control over markup and styling. Form is a type-safe form management library with field-level validation, async validation, array fields, and framework adapters. Virtual provides windowed rendering for long lists, rendering only visible rows to maintain sixty frames per second performance with thousands of items. The ecosystem has accumulated over twelve billion lifetime npm downloads and one hundred twenty-five thousand GitHub stars, and is used in production at major companies. All libraries are MIT licensed with no paid tiers.