GS-Calc

GS-Calc is a spreadsheet application that will help you to organize your data, track your expenses and incomes, create reports, handle large text files and databases. You can use 12 million rows x 4,096 columns, a unique feature of organizing worksheets in a tree form, > pivot tables with 12 million rows, up to 64 processor cores during calculations, Monte Carlo Simulations to easily estimate risk in business, costs, future pensions or simply to reverse-calculate formulas etc. You can use functions written by users in C/C++ as plain DLL libraries; work in up to 100 synchronized panes to boost your productivity. GS-Calc can be installed on any portable storage device and used without performing any registry modifications. It offers binary match/look-up functionality for more precise and fastest possible searching; regular expressions; support for JScripts & VBScripts; organizing scripts hierarchically in trees; 2D/XY and 3D charts capable of handling millions of data points; a complete set of functions to import, export and convert data in the CSV, text, dBase, Clipper, Fox Pro, xml, xls file formats; around 390 built-in formulas including specialized numerical functions: linear programming, integer programming and quadratic programming.