Mute Tab is a free Chrome extension developed by MeryDev. It falls under the category of Browsers and is specifically listed under Add-ons & Tools.

This extension provides a convenient way to quickly mute all tabs with just one click. The toolbar button acts as an ON|OFF switch, changing its color and shape to indicate the current state. If you need to unmute a single tab, simply right-click on it and select the "Unmute Tab" option.

To mute all tabs except the active one, you can visit the options page. It's worth noting that if you manually unmute a tab, the addon will not automatically change it, even if you click on the toolbar icon.