You’ll need to get Mac versions of software, like Microsoft Office, for example, or alternative applications that serve the same need, such as LibreOffice or Open Office. It also means replacing all the software you use, as OS X does not run Windows applications. OS X runs (legally 1) only on Apple hardware, so switching means getting a new computer and learning the nuances of OS X’s interface (just as you learned the nuances of Windows). They each have significant pitfalls, depending on what you expect. The most commonly considered alternatives include Apple’s OS X on Macs, Linux, and the Google Chrome operating systems. Whether any alternative will work for you depends on how that alternative’s characteristics compare to your needs. There is no exact replacement for Microsoft Windows.
Whether or not any of them would work for you depends entirely on how you use your computer.There are three major alternatives to Windows: Mac OS X, Linux, and Chrome.