Mergo: merging Go structs and maps since 2013
Google maps for block game
GPS log file viewer and analyzer
... the open-source glide computer
An information system for cyclists in Berlin and Brandenburg
GPX viewer, analyser and editor with official maps, terrain and graphs
Spatial Statistics Libraries & Tools for GeoTools, GeoServer, uDig
MacOS application to spoof / fake / mock your iOS / iPadOS or iPhone
Geodesy based library (geodetic and geocentric functions)
The full-featured, easy-to-use desktop GIS with real processing power!
Open Source Marine Chart Plotting Program
Multiplatform Ham Radio APRS and Mapping Program
Raster layer editing toolbar for ArcMap 10.x
LGPL GML parser
GPSBabel converts and transfers data like waypoints, tracks & routes.