sup - The first creep-free way to see nearby friends
Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Shhh Noise - A free sound generator designed to increase focus and relaxation.
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Sampld - Sampld is a sound sharing platform where people can share and download sounds for free.
OwnTracks - Cross-platform location sharing