One of the many solutions from Altassian, HipChat is a team chat solution for business It lets its users collaborate across any device, as long as there's an internet connection. Different apps can also be integrated so that updates from these third parties are visible on the chat thread. HipChat can also be deployed on your own server.
Free plan available for unlimited users, includes group chat, instant messaging and file sharing.
Paid plan starts at $2/user/month, includes group chat, group screen sharing and unlimited file sharing .
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