InterPals - InterPals is a friendly community of over 5 million friends, language learners, travelers and penpals.
Mastodon - Mastodon is a decentralized, open source social network. This is just one part of the network, run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome!
SLOWLY - Make pen pals from your smartphone
Facebook - Connect with friends, family and other people you know. Share photos and videos, send messages and get updates.
Twitter - Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.
Diaspora - The online social world where you are in control.