Show HN: Load huge CSVs/XLSX files without crashing your computer

[birdchirp]

Viztab supports multi-million-row files in the browser and also has Mac/Windows/Linux desktop apps, with 369 built-in spreadsheet formulas including broad Excel-compatible coverage, plus charts, filtering, and export. Free imports the full file and lets you interact with the first 1,000 rows; Pro unlocks full-file interaction.