Wickr - Wickr is a free end-to-end encrypted text, video, picture and voice messenger with full sender...

PenPal World - Connect with people all over the world

Confide - On the off chance that you need to get your messages private and encoded then utilize Confide that will fill in as your own and classified courier.

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.

Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.

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.