Microsoft Teams is a new chat-based workspace in Office 365. You can get flexible communication in the moment and keep everyone in the know. You will see content and chat history anytime, including team chats with Skype that are visible to the whole team. Private group chats are available for smaller group conversations. The program provides built-in access to SharePoint, OneNote, and Skype for Business, so you can work on documents right in the app.
Instant messaging and chatting application.
Simple and secure messaging application for coworkers.
Is a great way to have support on your website or to talk live to your visitors.
IM application which helps you to chat with your Facebook.
It allows you to send messages to all your Facebook contacts.