通話・ビデオ会議
Google Meet

https://gsuite.google.co.jp/intl/ja/products/meet/

2019/11/17
Microsoft Teams

https://www.microsoft.com/ja-jp/microsoft-teams/group-chat-software/

2022/02/01
Skype

https://www.skype.com/ja/

2019/11/17
Viber

https://www.viber.com/

2019/11/17
Webex Meetings

https://www.webex.com/ja/index.html

2022/02/01
Zoom Meetings

https://zoom.us/

2022/02/01