Viking is a free/open source program to manage GPS data
Bootable linux distro for Geospatial Applications
Toolkit for working with and mapping geospatial data
Showing The Amateur radio Repeaters Tool
GPS track editor for editing tracks and planning (multiple) day tours
GWC is a tile server and caching proxy written in Java
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 OSINT stack for monitoring, analysis, and risk detection
Build your own GPS unit
Geographic feature extraction and data mining
Open Source Desktop GIS with Surveying and Cartography Functionality
Simple GPS tracking server
utilities for cadastre system
A software package for quantitative analysis in Panbiogeography