OpenOffice (Great alternative for MS Office)

• A great alternative free open source for Microsoft Office
• OpenOffice.org 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
• License: Free and opensource under GPL
  
• Size / OS: 127 MB, Windows All
• More details from Softpedia
• More details from Download.com (With a video describing some features)
  
• More details from Tucows.com
  
• Screenshots from Softpedia
• Download Link 1
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