GS-Calc 6.0 is a spreadsheet offering worksheets with 512 columns and 2,097,152 rows, an unlimited number of hierarchically organized worksheets in one document, several categories of built-in functions and user-defined functions, 2D and 3D charts, support for JPEG images and fractals, unlimited undo/redo, numerical functions (equations, optimization, integration), and COM server functionality. You can import, export, and edit text, dBase, FoxPro, Clipper, Excel, and Access files.