LibreOffice Viewer - The Document Foundation provides a LibreOffice Viewer for Android.
WinDjView - WinDjView is a fast, compact and powerful DjVu viewer for Windows with tabbed interface, continuous...
Cisdem DocumentReader - Need to read mutiple windows documents on Mac? Cisdem Document Reader is the all in one solution to read WPD, WPS, XPS, OXPS, VISIO, DjVu, PDF, Winmail.dat files on Mac. Try it now!
DjVuLibre - DjVuLibre: Open Source DjVu library and viewer
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Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.