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.
PenPal World - Connect with people all over the world
WeSpeke - WeSpeke is an online writing community that connects people around the globe through letter-writing.
Airtripp:Free Foreign Chat - Airtripp:Free Foreign Chat is a social app by Kiheitai Inc.
We3 - AI that finds you the most compatible people nearby
Synoomy - Synoomy app provides features through which users can discover new cultures and communities as well as can also improve their language skills by making new friends.