OkMap - GPS Mapping Software is an useful program specially designed to calibrate raster maps with different types of cartographic projections.
    The free to use software is helpful in various outdoor activities like: trekking, off road, mountain bike, sailing, and much more. The program is helpful to calibrate raster maps with different types of cartographic projections. Apart from that, this program is helpful for: creating digital maps drawing point, multipoint, polyline and polygon; displaying simultaneously raster and vector maps, importing vector data with different types of cartographic projections, using raster and vector maps as background for navigation, creating and managing waypoints, routes and tracks in GPX format; displaying Google Earth and Google Maps in current map location, and much more.
    Supporting various image, maps, vector data, GPS data and DEM data formats, the program can make conversions between different types of coordinates, datums, formats and so on.