Class Libraries & REST APIs for the developers To manipulate & process Files from Word, Excel, PowerPoint, Visio, Pdf, CAD & several other categories in Web, DeskTop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms....formats including XLS, XLT, XLSX, CSV, SpreadsheetML, Tab delimited...Microsoft Excel file (Excel97-2003 - XLSX OOXML file format is not supported...