Datakit

What it does

Datakit leverages WebAssembly to process large datasets directly in your browser, without uploading your data to any server.

In the maker’s words, at launch

DataKit started as my solution to Excel crashing on large files, but it's grown into a full browser-based data platform that handles CSV/Parquet/XLSXL/JSON files up to 20GB+ entirely client-side. What it does: Drag files → instant SQL querying (joins, aggregations, everything) Automatic data profiling…

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  DataKit, your all in browser data studio is open source nowDec 2025 · github.com · ▲6

  Hey HN! I'm open-sourcing DataKit today. GitHub: https://github.com/datakitpage/datakit Live demo: https://datakit.page DataKit is a browser-based data analysis platform that processes multi-gigabyte files (CSV, Parquet, JSON, Excel) entirely client-side using DuckDB-WASM. Your data never leaves your browser. What it does: • Process large files (tested up to 20GB) without any server • Full SQL interface powered by DuckDB compiled to WebAssembly • Python notebooks via Pyodide for data science workflows • Connect to remote sources (PostgreSQL, MotherDuck, S3) with…

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  TextQuery – Query CSV, JSON, XLSX Files with SQL2025 · textquery.app · ▲163

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