Open Office is an alternative office suite, which is compatible to Microsoft office but it is so heavy and is a pain to use.
Get a Free copy of Kingsoft Office 2010.
It is the smallest and quickest Microsoft Office alternative and can access XML formats like .DOCX, .XLSX and .PPTX.
Its interface and functionality is similar to Microsoft Office 2003, which means, there is no learning curve.
With it you can write documents, do spreadsheets and create presentations in Microsoft formats.
Registration key: BXMCM-UHTL9-XHVJU-E2YFV-NLYDF
If you like it, you can buy it for as low as $39.95.
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