Chatib - Chatib is an online chat room where you can meet and chat with new people, make them friends, or even data them online.

PenPal World - Connect with people all over the world

ChatSecure - ChatSecure is a free and open source messaging app that features OTR encryption over XMPP.

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.

Element.io - Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.

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.