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....SpreadsheetML Workbook or template file, with or without macros...XLTX Excel Template. XLTM Excel Macro-Enabled Template. XML Extensible...