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....XLTX, XLTM, CSV, SpreadsheetML, ODS) file formats your business use...also allows exporting Excel® files to PDF, DOCX, PPTX, JSON, XPS...