less-sheet
A native, read-only desktop viewer for macOS and Linux that opens spreadsheet data without loading whole files into memory.
Open productWhat it does
About less-sheet
less-sheet is a native, read-only viewer designed for spreadsheet-sized data on macOS and Linux. Engineered for efficient data inspection, it avoids loading entire files into memory, fetching only the data needed to populate the active viewing window. It reads plain or gzipped CSV files from local storage or streamed URLs while automatically detecting separators, quote characters, header rows, and encodings. Users can search file content or filter rows without creating accounts or transmitting telemetry data.
- Availability:
- launched
- Access:
- free
- Format:
- software
- Platform:
- macos
- Platform:
- linux
Pricing at launch: Free with no user account required and no telemetry.
Core capabilities
Window-Based Memory Management
Fetches and renders only the minimal portion of data required for the current window view rather than loading the complete dataset into system memory.
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