OS X Mavericks
Upgrading to OS X Mavericks
Software compatibility
In order for software to work, it has to be compatible with the operating system. Therefore, you may not be able to use all of your existing software if you switch to a different operating system. Before you switch, ask yourself if there is any software that you can't do without. Then do some research to find out if it is compatible with Mavericks.
Upgrading from earlier versions of OS X
If you are upgrading from an earlier version of OS X, most of your apps should still work. However, it's possible that some might not. A simple Google search will often be enough to tell if an app will be compatible in Mavericks.
Switching from Windows to OS X
Some PC software will not work in OS X, but there may be a Mac version that you can buy or download. For example, Microsoft Office 2010 does not run in OS X, but you can buy Microsoft Office for Mac to view and edit your documents. However, not all software has a Mac version, and you may need to do some research to find out if there are Mac versions for your most important programs.
Installing Windows on a Mac
If you absolutely need to use PC software and there isn't a Mac version, you can use a feature called Boot Camp. Boot Camp comes pre-installed in OS X, and it allows you to install Windows on your Mac (if you have the Windows installation discs). You can then install any PC software you need.
The main disadvantage of Boot Camp is that you have to restart your computer whenever you want to switch between OS X and Windows. If you need to run PC and Mac software at the same time, you will need to buy additional software such as Parallels or VMware.