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....Controller represents the navigational code. The Struts framework...Cells (DOC, DOCX, OOXML, RTF) HTML, OpenDocument, PDF, EPUB, XPS...