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Apple is ending cats. At least with the ones the Mac operating system was named after. The new version of the OS X operating system is called Mavericks and brings several new features.

Craig Federighi, who heads the development of OS X, went through the news in OS X Mavericks very quickly. In the new version, Apple focused both on bringing new functions and applications to the general public and at the same time on adding welcome improvements for more demanding users. Apple claims that OS X 10.9 Mavericks contains over 200 new features in total.

Finder is newly supplemented with panels that we know from browsers, for more convenient browsing through file structures; a label can be added to each document for easier and faster orientation, and finally, support for multiple displays is improved.

In OS X Lion and Mountain Lion, working on multiple displays was more of a hassle than a benefit, but that changes in OS X Mavericks. Both active screens will now display both the dock and the top menu bar, and it will no longer be a problem to launch different applications on both. Due to this, Mission Control has been significantly improved, managing both screens will now be much more convenient. An interesting fact is that it is now possible to use any TV connected via AirPlay, i.e. via Apple TV, as a second display on the Mac.

Apple also looked into the guts of its computer system. On the screen, Federighi commented on a lot of technical terms that will bring savings in performance and energy. For example, CPU activity is reduced by up to 72 percent in Mavericks, and system responsiveness is greatly improved thanks to memory compression. A computer with OS X Mavericks should wake up 1,5 times faster than with Mountain Lion.

Mavericks will also get an upgraded Safari. The news for the Internet browser concerns both the outside and the inside. The sidebar, which until now contained the Reading List, is now also used for viewing bookmarks and sharing links. I have a very deep connection with the social network Twitter. Also related to Safari is the new iCloud Keychain, a classic encrypted password store that will now sync across all devices via iCloud. At the same time, it will be able to automatically fill in passwords or credit cards in browsers.

A feature called App Nap ensures that individual applications decide where to focus their performance. Depending on which window and which applications you will use, a crucial part of the performance will be concentrated there.

Improvement met notifications. The ability to respond immediately to incoming notifications is welcome. This means that you don't need to open the respective application to reply to an iMessage or e-mail, but just choose the appropriate option directly in the notification window. At the same time, Mac can also receive notifications from associated iOS devices, which ensures smoother collaboration between different devices.

In terms of user interface and overall appearance, OS X Mavericks remains faithful to the past. However, the difference can be seen, for example, in the Calendar application, where leather elements and other similar textures have disappeared, replaced by a flatter design.

for Maps and iBooks. Nothing new for iOS device users, both applications will offer practically the same as on iPhones and iPads. With Maps, it is worth mentioning the possibility of planning a route on a Mac and then simply sending it to an iPhone. With iBooks, it will now be easy to read the entire library even on Mac.

Apple will offer OS X 10.9 Mavericks to developers starting today, then release the new system for Macs to all users in the fall.

The WWDC 2013 live stream is sponsored by First certification authority, as

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