qpdfview uses Poppler for PDF support, libspectre for PS support,
DjVuLibre for DjVu support, CUPS for printing support and the Qt
toolkit for its interface.

Current features include:
* Outline, properties and thumbnail panes
* Scale, rotate and fit
* Fullscreen and presentation views
* Continuous and multiple-page layouts
* Search for text
* Configurable tool bars
* Configurable keyboard shortcuts
* Persistent per-file settings
* SyncTeX support
* Rudimentary annotation support
* Rudimentary form support
* Support for PostScript and DjVu documents