PenPal World - Connect with people all over the world
Frysbe - Frysbe: Make global friends at random and the fling app comes up with features to send messages to strangers from every corner of the world to expand your social circle.
InterPals - InterPals is a friendly community of over 5 million friends, language learners, travelers and penpals.
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.
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.
Polyglot Club - Polyglot Club is a new social network for language learners.