LibreOffice Viewer - The Document Foundation provides a LibreOffice Viewer for Android.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
OpenDocument Reader - OpenOffice Document Reader is an Android OpenOffice and LibreOffice Document Reader!
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Office Online - With Office Online you can view, edit, and share Word, Excel, PowerPoint, and OneNote files on your devices using a web browser, so you can work anywhere.
Google Docs Viewer - With Google Docs Viewer, you can quickly view many file types online, including PDFs, Microsoft...