It 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 (with Poppler version 0.20.1 or higher)

* Rudimentary form support

* Support for PostScript and DjVu documents