GS-Calc is a spreadsheet application designed to operate with large volumes of data. It supports worksheets of up to 32 million rows and 16,384 columns. The number of sheets and subfolders in a workbook is unlimited. Text and CSV files that exceed these limits are automatically split into multiple sheets and saved in a ZIP file. The application loads and processes tens of gigabytes of data in minutes. It includes advanced statistical functions, pivot tables, Monte Carlo simulations, and tools for time series analysis.