Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
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.
Foursquare - Foursquare is all about helping you find new ways to explore your city.
Maptitude - Maptitude is a mapping software that is fitted with GIS features that avail maps and other forms of data regarding the surrounding geographical areas. Read more about Maptitude.
Mapple.me - Mapple.me bridges the gap between available time and availability of friends to increase social...
QGIS - QGIS is a desktop geographic information system, or GIS.