Toolkit for working with and mapping geospatial data
Viking is a free/open source program to manage GPS data
GWC is a tile server and caching proxy written in Java
Bootable linux distro for Geospatial Applications
Showing The Amateur radio Repeaters Tool
Open OSINT stack for monitoring, analysis, and risk detection
GPS track editor for editing tracks and planning (multiple) day tours
Navigational Algorithms - Marine navigation
... the open-source glide computer
An information system for cyclists in Berlin and Brandenburg
A Matlab software to estimate Euler pole parameters
Open Source Desktop GIS with Surveying and Cartography Functionality
Build your own GPS unit
Geographic feature extraction and data mining
Spatial Statistics Libraries & Tools for GeoTools, GeoServer, uDig