Superintendent.app

Superintendent.app is a desktop application that lets you work with CSV files using SQL. Instead of struggling with spreadsheet limitations or setting up a full database, you can directly write SQL queries to filter, sort, and analyze your data. It handles large files efficiently, with the ability to import a 1GB CSV file in about 10 seconds. Everything runs locally on your machine, keeping your data private and secure without requiring an internet connection.

The application provides a straightforward interface for managing multiple SQL queries in tabs, visualizing results with various chart types, and exporting your findings. It stands out by being purpose-built for CSV analysis, avoiding the complexity of database tools or the row limits of spreadsheet applications. You can highlight and run specific parts of a SQL statement to test logic, sort data with simple clicks, and copy large result sets directly from the interface.

This tool is particularly useful for data scientists, engineers, and business analysts who regularly work with CSV exports but want more power than spreadsheets offer. Real-world applications include analyzing server logs, processing financial reports, and preparing data for presentations—all while maintaining complete control over your data on your local machine.