Chess.com Notifier Add-on for Firefox
The Chess.com Notifier Add-on for Firefox checks regularly whether it is your turn in one of your current chess.com games. It then notifies you by displaying a little icon in your Firefox status bar. A double-click on this icon directly brings you to your next ready game.
Please note that the add-on is still in beta-status, meaning that it might contain bugs and might not always work as intended.
1. go to Extras->Add-ons
2. click on Preferences on the Chess.com Notifier Add-on.
3. Enter your chess.com username. You usually shouldn't need to adjust the time between checks.
The add-on will display a small pawn icon in your status bar. If the icon shows a hand next to the pawn, it is your turn in one of your games. Double-click the icon to go to your next ready game. You might still need to log in on the chess.com website if you are not logged in already (the add-on does not know your password nor will it ever ask for it).