License: GNU LGPL 2.0
Software: Openoffice.org 2
Description: An office suite including a word processor, a spreadsheet editor, an equation editor, a presentation editor, a database editor, and a vector graphics editor.
Advantages: Open-source, uses (by default) open formats, supports a variety of different formats, and has a good interface
Disadvantages: A bit slow when starting up
Official WWW: http://www.openoffice.org/ Wikipedia Article: http://en.wikipedia.org/wiki/OpenOffice.org