Yesterday, Apple held a press conference where they released the new OS X 10.9 Mavericks for free. Reviewers are pretty much on the same page. OS X Mavericks is not much different than Apple's previous operating softwares, but new features like Finder tabs, notifications and the new Maps and iBooks apps stand out.

"[Mavericks] looks and acts very much like its predecessor, Mountain Lion, meaning there's no major learning curve for users who upgrade," Computerworld said.

Mavericks features more efficient memory which will enhance image processing and video. Users will also get an additional hour of web browsing and 1.5 hours more of video play with a full charge. The operating software include the additions of two new Mac apps, Maps and iBooks. The ability to tag documents has also been added 

Apple also announced that it will make the Mac OS and iWork software suite free to all users in order to better compete with Microsoft Office software.

"We want our customers to have our latest software," Tim Cook, Apple CEO said.

"Apple has visibly retained what makes the Mac great, but also added some useful features and services," The Mac Observer said. "Perhaps the most anticipated and welcome feature of Mavericks is Finder tabs. In the style of Safari ... that ads a small '+' icon at the top right of the Finder window. Click it and you'll see the familiar metaphor of multiple tabs ... This, of course, allows you to look at a lot different folders in different places in just one window, and that's a boon for MacBook Airs with a small display. You can even look at the same folder with different views, say, list in one and icon view in the other ...  this could come very handy in a major research report that has lots of resources associated with it. Or something as simple as this very review. What took Apple so long?"

Reviewers are also impressed by the Maps and iBooks apps, which have previously been available on iPhones, but not on laptops.

"The Maps app, as you'd expect, is an elegant alternative to Google Maps, and Apple has ironed out most, but not all, of the glitches that afflicted Maps when it was introduced in iOS," PCMag said. "What makes Maps stand out from Google Maps in OS X is its tight integration with the rest of Apple's apps."

"Taken on its own, Mavericks is a bit underwhelming ...," Engadget said. "The two biggest additions here, iBooks and Maps, bring truly new functionality to the OS that will keep users further entrenched in Apple's ecosystem. Finder tabs, tags and tweaks to 10.8's Notifications amount to nice changes that help improve the overall experience. The company's new approach to multiple displays, meanwhile, is sure to have a positive impact on multitaskers and anyone using a Mac in the office."

Last week, Windows released its latest operating system, Windows 8.1. InfoWorld gave Mavericks an overall score of 8.7 out 10, with its highest score being  a 10 out of 10 for Value. Meanwhile, Windows 8.1 received a 7.8 overall score, with its highest score being a 10 out of 10 for compatibility.

Apple also announced news about the new iPad Air, iPad Mini with Retina display, MacBook Pro, MacBook Air and Mac Pro during a press event yesterday.