This free, multilingual, multiplatform office suite is the only one  which rivals the domination of Microsoft Office. Its documents are compatible with all the major commercial office suites. OpenOffice.org is the first office suite to use the OASIS OpenDocument format, which will be, in a near future, the international standard for office software.

This suite contains the main softwares that you need to do office work, especially a text editor and a spreadsheet. Here is what's new in OpenOffice.org 2.0.4 : enhanced PDF management, direct export to LaTex, new functionalities in Calc and Impress, Mac OS X (X11) now uses system fonts...

OpenOffice is available for Windows, Mac OS X (with X11), Solaris, Linux, Linux PPC and FreeBSD.