Colomin is a native CSV editor designed for speed and efficiency. It allows users to open CSV files instantly, edit them like a spreadsheet, and save them without any cloud dependency or subscription fees. Colomin can handle millions of rows seamlessly, enabling background indexing that streams large files into view while you start editing. It auto-detects various delimiters and infers column types for accurate sorting. Key features include rectangular selection, in-place editing, live updates for count and averages, and robust keyboard navigation. Colomin is available on macOS, Linux, and Windows, and is optimized for long sessions with multiple themes and font controls. It focuses solely on editing CSV files without unnecessary features, making it a straightforward tool for users who need a fast and reliable CSV editing experience.