Map format used by MapInfo MapX and MapXtreme mapping software; contains a visual map and data about locations within the mapped area; may include extra layers, such as rasterized images placed on the map.
Program(s) that open gst files
Windows: MapInfo MapX or MapXtreme; MapInfo ProViewer
Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/gst
