Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
WikiTribune - Evidence based journalism, from the founder of Wikipedia
Mapple.me - Mapple.me bridges the gap between available time and availability of friends to increase social...
Data Dashboard by Wikimedia Foundation - Compiled data of the Worlds busiest public site
OwnTracks - Cross-platform location sharing
Neighborhoods.nyc - Hyper-local alerts targeted by NYC neighborhood