Zenly - Zenly is a GPS tracker to locate your friends in realtime.
DNScapy - DNScapy is a DNS tunneling tool. The code is very light and written in Python.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Navisens - Indoor & outdoor location without beacons, WiFi, or GPS
Radar Chat - Radar Chat lets you communicate with people nearby and discover things in the world around you.
Pathshare - Pathshare is a beautiful app that helps you share your path in realtime.