PenPal World - Connect with people all over the world
Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Unbordered - Unbordered app comes up with features to help you in finding the perfect language practice and exchange partners so you can practice foreign languages right through your mobile phone.
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Anygram - Anygram app offers features that let you meet new people so you can make new foreign friends practice native languages to learn something new.
OwnTracks - Cross-platform location sharing