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....xcel®スプレッドシート(XLS、XLSX、XLSM、XLSB、XLTX、SpreadsheetML、CSV、ODS)...