Google Hangouts is for meeting small groups of people. It allows you to have conversations in a simple way where you see the names of people you are talking to, but without clutter. It is useful for getting students to start talking online to other students, if they already have a Gmail account. In addition, teachers can support students by making themselves available on Google Hangouts at agreed times.
Information:
Main purpose: Resources to use in the classroom, Resources for learners
Languages: English and several others
Available as: App for Android and Windows
Cost: Free