Handles any file size
Tested with 28 million rows and 14 GB files. Memory usage stays under 1 GB regardless of file size thanks to lazy row loading.
Columnar
Open any CSV or TSV file — no freezing, no crashes. Built for datasets that break every other tool.
What makes Columnar different
Section titled “What makes Columnar different”Instant open
Files open in seconds. Columnar indexes byte positions instead of loading rows into memory — so you see data immediately.
Fast search and sort
Full-text search and column sort use all CPU cores in parallel. Results on a 14 GB file in seconds, not minutes.
Column statistics
Double-click any header for count, unique values, nulls, min, max, mean, median, and standard deviation.
Native and lightweight
Built with Tauri — a 5 MB installer, no Electron, no browser tab eating your RAM.
Works on all platforms
Windows, macOS (Apple Silicon), and Linux. Same features everywhere.