Free Secure CSV to SQL Converter &Personal Data Warehouse

The first software to bring Server-Side LSM Tree Architecture to the desktop.Process 50GB+ of data with millisecond latency on a standard PC.

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Ultimate Performance

KooQuery is a Privacy-First engine that lets you Convert Excel to SQL instantly. We abandon the monolithic database model for a custom Desktop LSM Tree Engine.

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Memory Efficient

4GB RAM

Create indexes on 50GB+ of data using only about 4GB of memory thanks to Bloom Filters.

Query Speed

<10ms

Execute complex queries in milliseconds. The power of a large server-side database, now on your personal computer.

One-Click Import

CSV / XLSX

Instantly convert massive CSV and Excel files into queryable tables with a single click.

Desktop LSM Tree Engine

We brought the Log-Structured Merge-tree (LSM) architecture to the desktop. By incorporating Bloom filters, we optimize memory usage, giving almost all modern PCs the ability to process massive datasets.

Choose Your Power

Whether you need instant access or maximum performance, KooQuery has you covered. Both versions support smart data importing to customize column names.

Desktop App

The ultimate local-first experience. Unleash the full power of your machine with our LSM Tree Engine.

Engineered with LSM Trees & Bloom Filters
One-click import for CSV & XLSX
Full SQL support (Index, Insert, Update, Delete)
Extremely low memory footprint (~4GB for 50GB data)
Privacy-focused: Data never leaves your device
Download for Desktop

Available for Windows, macOS, and Linux

Web App

Instant analytics in your browser. Powered by DuckDB-WASM + OPFS for zero-install, secure data exploration.

Zero installation required
Instant launch & analysis
Secure in-browser processing
Visual SQL Builder included
Export results to CSV/JSON
Launch Web Version

Runs entirely in your browser