Yammer
Yammer is a collaboration tool and social network that helps you connect and engage across your organisation. It is closed, that is, only those who have access within a organisation, school or institution can join and see what you are posting.
Yammer provides Microsoft 365, and is suitable for iOS and Andragog, as well as Internet browsers. A Microsoft account is required to sign in. From Yammer you can easily access Outlook, Word, PowerPoint and a number of other applications that are part of the Office suite.
Information:
Main purpose: Resources to use in the classroom, Resources for learners
Languages: English and others
Available as: App for Android and Windows
Cost: Free