This is a simple program for viewing PDF files. There is also a library providing a PdfView widget which can be easily embedded in other programs.
The reason for writing this program is to have a lightweight Qt-only PDF viewer with the features that I want. As my time is limited, I probably won't have time to implement any feature requests for this program. Of course you should still post the requests, but they will likely end up in the TODO list. If you want to see additional features, sending patches will dramatically increase the chances of seeing the features implemented. Any developers are welcome to join this project.
Note that the user interface can be completely controlled using the keyboard (except for the magnifying glass, selection and links). When no menu bar is shown, the items in the tool bar can be triggered using Alt + their accelerator. The "Open File" dialog can be accessed using the standard "Open" shortcut (in an English system this is usually "Ctrl+O").