Import massive datasets in seconds. Scroll through millions of rows and run formulas instantly with no lag or crashes. Runs locally in your browser or on your desktop.
Everything you need to analyze, transform, and visualize your data at any scale.
WebAssembly-powered formula engine. Calculate across millions of cells with zero lag.
Stream CSV and XLSX files with millions of rows. No file size limits holding you back.
369+ functions: VLOOKUP, SUMIFS, INDEX/MATCH, pivot tables, and everything you need.
Bar, line, pie, scatter, and more. Turn your data into insights instantly.
Native apps for macOS, Windows, Linux. Or use it right in your browser — no install needed.
Free up to 1,000 rows. Go Pro for unlimited rows and the desktop app.
Open Viztab and start importing files immediately.
No sign-up required.
Guides, references, and comparisons to help you get the most out of your data.
Complete formula reference with syntax, examples, and tips for every function.
Practical guides on handling million-row files, CSV workflows, and more.
Open and view large CSV files instantly in your browser with no upload.
How to open, scroll, and analyze datasets with millions of rows.
Full-featured spreadsheet that runs locally with no subscription needed.
How Viztab compares for large files and offline data work.
Side-by-side comparison for handling large datasets and performance.