While I like the way Windows 8 shows your notifications within its Live Tiles for apps, Mountain Lion’s Notification Center makes it easier to see all of your alerts at a glance. Notification Center is also highly customizable. You can choose how many alerts you want to display from each app and the order of how they appear. Plus, you can turn all of the notifications off with a click when you need to be heads down. Bonus: you can post right to Twitter and Facebook from this menu.