This plugin allows you to upload Word, Powerpoint and Excel files through the media library uploader.

Easily embed Brainshark presentations into your WordPress posts.

Display documents on your WordPress website with the .NET version of the GroupDocs HTML5 document viewer.

Easiest way to upload and display PDF, MS Office and more documents on your WordPress website using Google Docs Viewer or Microsoft Office Online.

Attach documents to any page or post type with Microsoft's Office Web Viewer or Google's Document Viewer.

Uses the Scribd API to embed supported Scribd documents (e.g. PDF, MS Office, ePub, and many others) into a web page using the Scribd Docs Reader.

Easily embed your presentations in a WordPress blog. SlideOnline.com is a free service to share PowerPoint presentations online.