LibreOffice is a open source personal productivity suite for Windows, Macintosh and GNU/Linux, that gives you six feature-rich applications for all your document production and data processing needs: Writer, Calc, Impress, Draw, Math and Base.
Here are some screenshots from LibreOffice Suite:
LibreOffice Math
LibreOffice Draw
LibreOffice Impress
LibreOffice Calc
Download LibreOffice 3.5
