Android Cloud SDK & REST APIs To build apps for rendering & viewing images, HtmL, PDF, Word, Excel, Email, Visio, Project & CAD file formats.... Word, Excel, PowerPoint Visio, Project, Outlook OpenDocument...PPSX, PPSM, PPTM, POTX, POTM Visio: VSD, VSDX, VSDM, VST, VSTX...