Side-by-side comparison

Reactive client-side database with live queries and optimistic mutations, layered on TanStack Query or sync engines.

Async server-state manager with caching, deduping, retries and background refetching for any framework.

Promise-based HTTP client with interceptors and broad browser/Node support; still the most downloaded.

Vercel's lightweight React hooks for stale-while-revalidate data fetching.