Windows 8 comes with several new built-in applications that provide access to a variety of different types of content (news, sports, and weather) and services (email, storage, and more). The following is an excerpt from the article: "Windows 8 comes with the following built-in touch-optimized applications out-of-the box (meaning that they're installed by default). These apps can perform several different types of functions from managing your digital communications (email, IM, etc.) to browsing the different types of content (movies, videos, pictures, etc.) on your local system.
As I talked about in an earlier article, there are two types of applications available for Windows 8. There are the older desktop applications that are installed by using optical media or by downloading it off the Internet. Then there are the native Windows 8 apps that are written to take advantage of the new Windows UI." (read the rest of the article)