Plugins - word processing, spreadsheets and presentations

This page provides links to manufacturers that offer free viewers for office applications (word processing, spreadsheet and presentation) file formats. Please note that although not interchangeable, both the Corel and Microsoft full office application software suites contain viewing capability for competitive file types. Company home page links are provided in case more specific product pages change unexpectedly.

The United States Patent and Trademark Office does not necessarily endorse the views expressed or the facts presented on this site. Further, the United States Patent and Trademark Office does not endorse any commercial products that may be advertised or available on this site.


Company Product Web Page
Corel Corporation Corel WordPerfect Office X* combined word processing [.wp_ files], spreadsheet [not used by USPTO] and presentation [.shw files] package with 30 day trial version
Microsoft Corporation Microsoft Word word processing [.doc] - free viewer
Microsoft Excel spreadsheet [.xl_ files] - free viewer
Microsoft PowerPoint presentation [.ppt] - free viewer


Disclaimer: The United States Patent and Trademark Office provides these links solely for the convenience of members of the public who may need to access documents offered in these formats on our website. The USPTO does not endorse these companies' products nor the accuracy of any information presented on their websites. All brand and product names are trademarks, registered trademarks or service marks of their respective companies.