My recommended PDF Viewer is called “OpenXCEdditor.” It lets you easily see the results of any Open-Xchange modifications in the tabbed view of your PDF viewer, so that you can easily see what's been done and how much there is left to do. Also, it will automatically save the changes in your PDF for you, so you don't have to manually save it if you want to keep using your current PDF viewer. A couple of notes from Open-Xchange Editor users: · My recommended PDF Viewer requires you to edit your documents in the Open-Xchange Editor PDF viewer using Open-Xchange, but it will open the .CF viewer for you by default. You can view documents in the viewer or open them with Open-Xchange Pro SDK (or a third party PDF viewer!) using your normal default PDF application. · If you use any PDF viewers based on the Open-Xchange software SDK, they will be able to display documents in the Viewer. They will also be able to open Open-Xchange documents in your standard PDF-application and read the sub-document data (like a table of contents, page descriptions and so forth). · Some users may want to open Open-Xchange documents from another reader, so Open-Xchange Editor allows for a new way to easily view and interact with Open-Xchange files created by other users. Open-Xchange Editor allows us to create .CF files with metadata entries for. Xcel files, which makes it possible to easily use other PDF-viewer applications to view the PDF documents created by other users. · It's helpful for the user to know the location of the CF viewer and the . Xcel viewer in the desktop of the PC being used from to view PDFs created by other users. A few more tips from the Open-Xchange Reader Users · Some users will find that the PDF Viewer for Open-Xchange Editor uses your native viewer to view PDF files, but if you click “Open”, it will start the OpenXCEdditor PDF editor.