Ruby Cloud SDK & REST APIs to build apps for rendering & viewing images, HTML, PDF, Word, Excel, Email, Visio, Project & CAD file formats....CAD: DGN, DWF, DWG, DXF, IFC, STL Markup: HTML, MHT, MHTML, XML...XLSM OTG DIB PPS LOG TIF VST STL GIF OTS ASM FODS TIFF GZ MHT...