Document Reader is a free Android application developed by XPDF that allows users to view and manage their PDF and Word documents. With this app, users can browse and open all the PDF files stored on their device, as well as external locations, without the need for an internet connection.

The app provides a fast and easy way to search for documents within internal and external locations. It also offers a PPT viewer for all PPT files located on the device, allowing users to view them with just one touch. The app supports various file formats, including Portable Document Format (.PDF), XML Paper Specification (.XPS), PostScript (.PS, .EPS), and ePub (.EPUB).

In addition, Document Reader is an all-in-one complete free office suite app that integrates with Memo, Document, Spreadsheet, Presentation, and PDF. It provides users with a lot of tools for PDF reading, as well as editing Word documents. However, it should be noted that the app does not allow for editing of PDF documents.

Overall, Document Reader is a useful app for those who need to view and manage their PDF and Word documents on their Android devices. It is easy to use, fast, and provides a good range of features for free.