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....مثل إكسل 95/97 - 2003 ، SpreadsheetML ، فتح ملفات إكسل 2007/2010/2013/2016/2019...و XLSX و XLSM و XLSB و SpreadsheetML و TabDelimited أو TSV و...