OpenOffice.Org
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OpenOffice Portable
OpenOffice Portable is a free, open-source office suite compatible with Microsoft Office, and can be run from a USB drive for portability.
OpenOffice
OpenOffice is a completely free open source text and document editor, offering a Microsoft Office-like interface and full compatibility for creating various document types.
OpenOffice
OpenOffice.org is a free alternative to Apple iWork and Microsoft Office, with different applications and compatibility with common file formats.