DataKit

DataKit is a privacy-first, browser-based data analysis tool that brings the power of SQL directly to your web browser. Built with DuckDB-WASM and React, it processes multi-gigabyte datasets entirely client-side without requiring any server-side processing or cloud uploads. How does it work? DataKit transforms your browser into a powerful data analysis environment. Simply drag and drop CSV or Parquet files, and immediately start querying them with full SQL capabilities. Key Features: Client-side processing - All data processing happens in your browser using WebAssembly Large file support - Handle multi-GB datasets with streaming parsers and efficient memory management Full SQL engine - Powered by DuckDB with support for complex queries, joins, and aggregations No setup required - Works instantly in any modern web browser Zero data upload - Your files stay on your local machine Perfect for: Data analysts who need quick insights without setting up databases Privacy-conscious users who can't upload sensitive data to cloud services Teams wanting to share analysis workflows without infrastructure overhead Anyone frustrated with Excel crashes on large datasets