Most people know the operating system as a window.
This is due in large part to the success of the Microsoft platform. There are other operating systems on the Linux platform (Fedora, Ubuntu..etc), Solaris, and Macintosh (OS X). There are two types of operating systems. DOS (Desktop Operating System eg; Windows XP, Windows Vista, Windows 7, Ubuntu). And operating systems such as NOS (Network Operating System eg; Windows 2003 Server).
Application software
Microsoft Word, Excel, Photoshop, etc. that we use is application software. Web applications are now challenging many areas of desktop applications. Google has also developed a mail application system such as Outlook Express that eliminates the need for web applications. The benefit is that you can use web applications as long as you have a browser. Unlike other applications, you don’t have to think about hardware, you don’t have to think about OS types for installation. No need to worry about running Windows and not running Linux.