Cross platform (lin/win/mac) geographical information system (GIS)
Open-source JavaScript library for mobile-friendly interactive maps
Traccar GPS Tracking System
LaMa - A Localization and Mapping library
Showing The Amateur radio Repeaters Tool
Navigational Algorithms - Marine navigation
Minimalistic wide-open GPS-locator/tracker
Q-Rap (www.QRap.org.za) is a Radio Network Planning plug-in for QGIS
Library for OpenStreetMap offline rendering and routing
Subway maps of the World !
Multiplatform Ham Radio APRS and Mapping Program
Former project page
Track your mobile device or cellphone via internet using OpenGTS/GPRMC
Apl. móvil de Información georeferenciada + visor 3D escritorio
See you and your friends on a map
CAD 2D for Land Surveying,Civil and more
GT2 combines online and offline navigation for hikers and cyclists
FAA digital chart viewer for iPhone and iPad