The Mixxer is a entirely free non-profit language exchange site. Members can practice speaking via Skype/Zoom/Whatsapp or improve their writing by submitting a writing sample and asking for corrections from native speakers.
My Language Exchange Alternatives
My Language Exchange is described as 'Language Exchange Community - Find a suitable language exchange partner and practice effectively using How-to's and lesson plans developed by an expert in language exchange learning. Exchange via word games, email, text, voice or video chat' and is a language learning tool in the education & reference category. There are more than 100 alternatives to My Language Exchange, not only websites but also apps for a variety of platforms, including iPhone, Android, iPad and Android Tablet apps. The best My Language Exchange alternative is Anki, which is both free and Open Source. Other great sites and apps similar to My Language Exchange are Duolingo, RemNote, Memrise and Busuu.