At the Apple event on Thursday, October 16, the company unveiled new products including the iPad Air 2 and the new iMac. Additionally, Apple announced the official launch of OS X Yosemite. The developer preview has been available since June, but the software is now open for everyone to download for free.

With Yosemite, Apple worked to streamline their Apple mobile and desktop operating systems. Therefore, much of Yosemite will look similar to OS X. The interface has been altered so that the menus are translucent, the buttons work a little differently and it has a more flat appearance.

In OS X Yosemite, the Spotlight feature got an upgrade. In addition to searching for applications and files, you can search for web sites, content on the iTunes store, movies in theaters, news, map locations and more. Apple made the iCloud Drive accessible in a folder view, so users can upload and access it easily, and on other devices.

The Notification Center added customizable widgets. The Mail app was also showed some love. While it looks pretty similar, you can now markup photos before you send them. You can also sign PDFs and documents without the use of third-party apps. And for large attachments, the documents can be uploaded to Mail Drop.

Continuity between devices has been improved with the Handoff feature, which means that you can easily send content from your Mac to your iOS devices and vice versa. You can also accept calls and reply to SMS messages on your desktop. Airdrop will also work seamlessly between the two devices.

And last but not least, Apple’s browser Safari received a face lift. It now looks similar to the Safari on iOS with just a single toolbar. And you can now open private browsing sessions without closing your previous browsers.

Learn about how to upgrade here.