Blender addons to make the bridge between Blender and geographic data
Cross platform (lin/win/mac) geographical information system (GIS)
Python data, Leaflet.js maps
Large-scale WebGL-powered geospatial data visualization analysis
Accurately Locate Smartphones using Social Engineering
GeoServer repository
Interactive, thoroughly customizable maps in the browser
Traccar GPS Tracking System
An open source geocoder for openstreetmap data
Self-hostable alternative to Google Timeline
Open Source Routing Machine - C++ backend
Mybatis common mapper, easy to use
Handling and basic analysis of hyperspectral data in R
Toolkit for working with and mapping geospatial data
Bootable linux distro for Geospatial Applications
... the open-source glide computer
Open Source Desktop GIS with Surveying and Cartography Functionality
Geographic feature extraction and data mining
GWC is a tile server and caching proxy written in Java