Microsoft Teams is the chat-based workspace in Office 365 that integrates all the people, content, and tools your team needs to be more engaged and effective.
|1.0||v1.0 from portal.office.com
|Spotify||Subscription-based streaming audio player||1.0.x|
WhatsApp is a well known messaging platform used mostly by mobile phone users (due to app requirement), purchased by Facebook. All data are end-to-end encrypted. Initial release was back in January 2009.