OpenOffice.org is a free productivity suite compatible with all major office suites.

OOo Calc is a feature-packed spreadsheet which can turn boring numbers into eye-catching information. Calculate, analyse, and visually communicate your data quickly and easily. Use advanced spreadsheet functions and decision-making tools to perform sophisticated data analysis. Use built-in charting tools to generate impressive 2D and 3D charts.

This version contains KDE integration: KDE Native Widget Framework, KDE Crystal icons, and KDE file dialog.