Facebook Messenger for Firefox
Mozilla launched new social API for Facebook Messenger. The Firefox offering users no need to keep facebook open in window to know status updates and notifications.
The Facebook Messenger for Firefox allow you to connect facebook while opening other websites and also it will allow you to chat with friends and check notifications,updations and friends request.
Once you installed this app in firefox,it will show in right top corner of firefox window. To install facebook app in firefox, you need to install a new version of firefox browser. Click here to download new version of firefox. After firefox installation, please click here to enable facebook messenger for firefox.