An open source multi-platform office suite.
OpenOffice is a free, Open Source alternative to MS Office with a Word compatible word processor, a complete Excel compatible spread sheet program and a Power Point like presentation software and drawing program and also allows to save to PDF file.OpenOffice.org For Windows 2.3.1
In addition, OpenOffice offers enhanced printing capabilities and options for direct connection with external email programs as well as form-letter management to send letters to addresses from a database.