Cross platform (lin/win/mac) geographical information system (GIS)
Interactive, thoroughly customizable maps in the browser
Traccar GPS Tracking System
GPS log file viewer and analyzer
Bootable linux distro for Geospatial Applications
GPS track editor for editing tracks and planning (multiple) day tours
An information system for cyclists in Berlin and Brandenburg
... the open-source glide computer
A Guide of the Trees of Barcelona City
A software package for quantitative analysis in Panbiogeography
Open Source Desktop GIS with Surveying and Cartography Functionality
Tool for assessment of environmental services on farm scale.
Open-source JavaScript library for mobile-friendly interactive maps
Adjustment of local surveying networks, binary builds for Windows
Deed and people mapping for genealogists and local historians