Mumble Channel Viewer is a Chrome extension developed by nunofreitas. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools. This extension allows users to view channel and user information from a Mumble server, specifically the open-source voice chat software called Mumble.

With Mumble Channel Viewer, users can easily see who is currently on the server and get detailed information about the channels and users. However, it is important to note that this extension does not provide any chat functionality. Its main purpose is to provide a convenient way to monitor and keep track of the users and channels on a Mumble server.

To use Mumble Channel Viewer, the server must implement the Channel Viewer Protocol. This ensures compatibility and seamless integration with the extension. Overall, Mumble Channel Viewer is a useful tool for Mumble server administrators and users who want to stay informed about the server's activity and participants.