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....Excel file Workbook workbook = new Workbook ( "sample.xlsx" ); //Access...Dim m_workbook As Workbook = New Workbook ( "sample.xlsx" ) '...