Main improvements include iCloud, allowing you to store all your documents in the cloud and use them on all your devices. Messages allows you to keep the conversation going no matter where and when. Reminders is a new program making sure that nothing slips your mind. You can tick off things that are done from any one of your devices at home or on the go. Same is true with the newly improved Notes application. The new Notification Center will remind you of all things happening on your computer. A new Share Sheets function lets you share anything from anywhere with a new ‘Share’ button. Twitter is build right into many apps of the new operating system. Apple also introduces AirPlay Mirroring – this new feature in Mountain Lion is made for an audience. With AirPlay Mirroring, you can stream what’s on your Mac to your HDTV via Apple TV. And the list just goes on.