FREE OFFICE Suite - all users - not just students - OPEN OFFICE - PC MAC LINUX
OpenOffice.org released the long-awaited version 2.3.1 of its free office suite for Windows, Mac and Linux with a new database module, support for the OpenDocument file format, a fresh user interface, and plenty of improvements and bug fixes.
OpenOffice.org 2.3.1 is the first open source office suite to offer thorough support for the Open Document Format for Office Applications (OpenDocument) OASIS Standard. OpenDocument is an XML file format that was developed by OASIS, the international body for the development and ratification of e-Business standards. The OpenDocument format can be used by any office application without fear of vendor specific lock-in or onerous licensing terms and fees, with the confidence that documents can be viewed, edited and printed for generations to come.
The suite now also offers a database module, Base, to complement the word processor (Writer), spreadsheet manager (Calc), presentation manager (Impress) and drawing tool (Draw) modules. These give all users the tools they need to be productive in the modern world. Free for all, OpenOffice.org offers everyone the enduring freedoms to use, study, improve and share the software.
With a new user interface, OpenOffice.org 2.3.1 is easy to learn and use by the most inexperienced user, and is mostly compatible with Microsoft Office files. Supported by dozens of professional companies, OpenOffice.org 2.3.1 will be available in more than 60 languages. Able to run on Microsoft Windows, GNU/Linux, Sun Solaris and other platforms, OpenOffice.org is increasingly the choice of businesses and governments throughout the world, and earlier versions have been downloaded over 49 million times since the project's inception.
See a review here - or do a google search openoffice review for more.
Sorry - for those wanting the native Mac version go here
NeoOffice is the OSX port of OpenOffice and its also free