Language.exchange - Language.exchange is a language-learning community that connects people around the world to help you learn a new language, meet people and make friends.
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.
Polyglot Club - Polyglot Club is a new social network for language learners.
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.
PenPal World - Connect with people all over the world
Random PenPals - Get a quarantine PenPal in 10 seconds