Cross platform (lin/win/mac) geographical information system (GIS)
Minimalist POI Map Tracker and Trip Planner
GeoServer repository
Open Source Routing Machine - C++ backend
Geographic library
GPS log file viewer and analyzer
Toolkit for working with and mapping geospatial data
Navigational Algorithms - Marine navigation
... the open-source glide computer
A Guide of the Trees of Barcelona City
Open OSINT stack for monitoring, analysis, and risk detection
Geographic feature extraction and data mining
Automated detection of the unknown early map projection
Visualize deep ocean biogeochemical sediment samples in 2D and 3D!
Minimalistic wide-open GPS-locator/tracker
LaMa - A Localization and Mapping library
Adjustment of local surveying networks, binary builds for Windows
Advanced mission simulation and analysis tool
A GUI for the freeware Geographical Information System PCRaster
GDAL wheels for python and C/C++ projects (Linux only)
Plugins for OpenCPN