OS X Mavericks是苹果在2013年WWDC  正式发布的全新桌面操作系统。  该版本的

两大特色在于：

1.可以给文件加标签，方便检索。

2.多屏显示，输出的信息可以在多个屏幕间显示，各个屏幕间不会干扰，可以独立操作。

OS X Mavericks 10.9 Developer Preview 1 | Mac Os X | 4.66 GB

The next version of the Mac operating system, OS X 10.9, is officially labeled as OS X Mavericks. Mavericks, named after an epic surfing spot in northern California, has a lot of new features, but also represents a change in naming conventions away from the familiar cat themes. In future versions of OS X will follow the same naming convention and all be named after inspirational places throughout California, where Apple is located.

OS X Mavericks Features

Many of the OS X Mavericks features are aimed at power users, some of the feature highlights include:

Finder has tabs support with drag and drop, window merging, and full-screen support

Tags come to the Mac for searching meta data, tags show up in the sidebar

Multi-display enhancements: support for full screen, menus span multiple displays, Docks can be summoned from any display, spaces span independently across multiple monitors

Significant performance improvements, including compressed memory, AppNap, Timer Coalescing, OpenGL 4, accelerated smoothed scrolling

AppNap suspends and resumes background apps and processes on the fly

Safari 7 includes major under-the-hood improvements, and includes a social stream and link sharing feature that watches your social networks for interesting links

iCloud keychain keeps track of all passwords and logins, stores them encrypted in iCloud and remembers all logins, Safari will auto-suggest ultra strong passwords

Notification Center improvements, you can now respond directly to Notifications from the Notification Center without launching the specific apps, and iOS push notifications will arrive in OS X, they will also show up on the lock screen of OS X

Apps automatically update in the background

Skeumorphic interfaces are gone, missing from apps, from Calendar, Reminders, etc

Calendar improvements provides suggestions, weather updates for location, travel expectations for time to arrival, and much more

Maps come to OS X, can send directions from Mac Maps to iOS Maps

iBooks arrives on OS X as a book reader, syncs with iOS devices, allows note annotation, includes built-in study cards based on notes

The OS X v10.9 Developer Preview supports the following Macs:

- iMac (Mid-2007 or later)

- MacBook (13-inch Aluminum, Late 2008), (13-inch, Early 2009 or later)

- MacBook Pro (13-inch, Mid-2009 or later), (15-inch, Mid/Late 2007 or later), (17-inch, Late 2007 or later)

- MacBook Air (Late 2008 or later)

- Mac Mini (Early 2009 or later)

- Mac Pro (Early 2008 or later)

- Xserve (Early 2009)

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