Maps:
* Garmin vector maps and *.jnx raster maps
* Raster maps supported by GDAL
* Online maps (TMS and WTMS (partially))
* Display multiple maps in one view
* Reproject maps on-the-fly to view's projection
* Digital elevation model independent from maps
* Hillshading and slope coloring

GIS Data:
* 100% project oriented data handling
* Summarize project by a diary
* Support for tracks, waypoints and areas
* Simple geocache support
* Store projects in a database
* Support for multiple databases

Planning:
* Undo/redo history for all items
* Track point edit mode to create/change tracks
* Cut/copy/combine/reverse tracks
* Various filter to enhance tracks

GPS Devices:
* Support for newer Garmin devices
* Support for TwoNav devices
* Project oriented data organization on devices
* Synchronize your project with several devices attached 

System:
* License GPL3+
* Runs on all *nix systems as well as on Windows
  Probably on OS X, too, but so far no one volunteers to 
  maintain a binary.
* GUI has been translated to Czech, French, German and Spanish
* Wiki documentation is English 
* Needs Qt5, GDAL, Proj4 installed
* For device support on Linux DBus and UDisk2 must be installed
