OpenOffice.org and (with limitations) Microsoft Office 2007 document viewing application for Android-based devices. It allows opening office productivity application documents located in the filesystem, e.g. on sd card, as well downloaded documents, files on Dropbox, or documents files attached to an email. It offers zooming in and out of documents, searching inside documents as well as copying text from documents. And it even offers reading text documents (.odt, .sxw, .docx) aloud.