Mac OS X Mavericks is here!

Apple's latest desktop and laptop operating system is finally here. As a free upgrade with new features, better security, and improvements to many of the core apps, there simply is no reason not to upgrade. Click through this slideshow to get a preview of some of the new features.

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Maps on your Mac

You can now use Apple Maps on your Mac desktops and laptops, with cool integrated features such as the ability to get directions directly from the contacts app, and to send directions to your iOS devices.
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Send directions to your iPhone

Once you have the directions to your destination, you can use the share button to send them to your iPhone.
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Read books on your Mac

iBooks is finally available for Macs with Mavericks. Use the store to buy new books or read them from your library if you already have books on an iOS device. iBooks completely syncs up with all your devices and remembers where you left off so you can start reading on your iPad, then open the same book on your Mac to continue reading.
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Skip from chapter to chapter

Just like iOS, you can open the table of contents at the top to skip to another chapter.
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Read in full screen

Open a book and go into full-screen mode to get a reading experience without distractions. You can use the trackpad on your Mac laptop to turn pages or click on the arrows on either side of the viewing area.
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Reading List

Safari now has a new sidebar where you can quickly click through your bookmarks on the left while viewing Web sites on the right. You can also switch to the Reading List and read stories you saved earlier.
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Finder Tabs

The Finder now has tabs that behave just like they do in Safari. You can hit a plus sign on the right side to add a new one, and you can drag-and-drop tabs to reorder them.
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Add tags to documents

In the Finder, you can now add tags to documents to make them easier to find. It also gives you greater flexibility in your searches with the ability to narrow your search by using multiple tags.
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New notifications

Notifications slide into view at the top-right of your screen where you can close them or snooze to make them come back in a short while. When someone sends you a message or e-mail, you'll be able to answer in-line straight from the notification window.
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A new look for the Calendar app

Much like the iOS version, the Calendar app in Mavericks has a simplified design and uses a lot of white space. When you click on an item (a meeting at another location, for example), the event inspector will pop up and give you driving time and a map if you need directions.
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Finder tabs

New tabs in Finder make it incredibly easy to move files around, and you can even add a tab for AirDrop to quickly drag-and-drop a file to a nearby Apple user.
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Safari top sites

The Top Sites screen has been improved in Mavericks, letting you reorder your top sites, or drag-and-drop a bookmark if you want to create a new one.
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