Apple Mac OS X Mavericks 10.9

With more than 200 new features, OS X Mavericks brings iBooks and Maps to the Mac, includes a new version of Safari, enhances multi-display support, introduces Finder Tabs and Tags and delivers new core technologies for breakthrough power efficiency and performance.
- iBooks, which gives you instant access to your iBooks library, more than two million titles in the iBooks Store, and works seamlessly across your devices;
- Maps, which brings powerful mapping technology to the desktop and lets you plan a trip from your Mac and send it to your iPhone for voice navigation on the road;
- a streamlined Calendar that estimates travel time between appointments, and provides a map with weather forecast;
- a new version of Safari with Shared Links, which helps you find what's new on the web by consolidating links shared by people you follow on Twitter and LinkedIn;
- iCloud Keychain, which safely stores your website usernames and passwords, credit card numbers and Wi-Fi passwords and pushes them to your trusted devices so you don't need to remember them;
- enhanced multi-display support, which makes using multiple displays easier and more powerful, with no configuration required;
- interactive Notifications, allowing you to reply to a message, respond to a FaceTime call or even delete an email without leaving the app you're using;
- Finder Tabs, which help unclutter your desktop by consolidating multiple Finder windows into a single window with multiple tabs; and
- Finder Tags, a powerful new way to organize and find your files located on your Mac or in iCloud.
Mavericks also includes new core technologies that boost performance and improve the battery life of your Mac. Timer Coalescing and App Nap intelligently save energy and reduce power consumption. Compressed Memory automatically shrinks inactive data to keep your Mac fast and responsive. Mavericks also delivers significant performance enhancements for systems with integrated graphics through optimized OpenCL support and dynamic video memory allocation.
What's new in this version:
Improves the reliability of VPN connections that use USB smart cards for authentication Improves the reliability of accessing files located on an SMB server Includes Safari 7.0.6