Colomin

What is Colomin?

Colomin is a native CSV editor for macOS, Linux, and Windows. It opens files instantly, lets you edit them like a spreadsheet, and saves them back like a normal file. It is built for big datasets, handling millions of rows locally without cloud sync or a subscription. The app feels fast and simple, with smart delimiter detection, keyboard shortcuts, rectangular selection, live selection stats, themes, and offline support. It is written in Rust and stays focused on one job: working with CSV files smoothly.

Key features

• Opens huge CSV files quickly with background indexing.
• Auto-detects delimiters and infers column types intelligently.
• Supports spreadsheet-style selection, copy, paste, and editing.
• Shows live stats like count, sum, average, and min.
• Includes light and dark themes with font and zoom controls.
• Works natively on macOS, Linux, and Windows.