Cross platform (lin/win/mac) geographical information system (GIS)
Free and open-source map hosting solution with custom styles
Traccar GPS Tracking System
An open source geocoder for openstreetmap data
Ultra Fast Geospatial Database & Geofencing Server
Spatial Statistics Libraries & Tools for GeoTools, GeoServer, uDig
Open source cross-platform Java Visual Traceroute
Builds Garmin maps from OpenStreetMap
A software package for quantitative analysis in Panbiogeography
A Matlab software to estimate Euler pole parameters
Open-source JavaScript library for mobile-friendly interactive maps
Minimalistic wide-open GPS-locator/tracker
PCRaster environmental modeling software
Google Earth Enterprise - Open Source
Workflow and set of tools for Automated Imagery Classification
Geostatistics and geosciences modeling software
The full-featured, easy-to-use desktop GIS with real processing power!
Tools for reading, validating & writing transit schedule info in GTFS