Esri ArcGIS - ArcGIS provides contextual tools for mapping and spatial reasoning so you can explore data & share location-based insights. ArcGIS is the heart of the Esri Geospatial Cloud. Try ArcGIS for free with 21-day trial.
Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
QGIS - QGIS is a desktop geographic information system, or GIS.
OwnTracks - Cross-platform location sharing
Geopointe - Geopointe enables Salesforce users to gain spatial insights via maps and apply geography to business processes.
Mapple.me - Mapple.me bridges the gap between available time and availability of friends to increase social...