A web browser is the software program you use to access the World Wide Web, the graphical portion of the Internet. The first browser, called NCSA Mosaic, was developed at the National Center for Supercomputing Applications in the early 1990s. The easy-to-use point-and-click interface helped popularize the Web. Microsoft Internet Explorer and Netscape Navigator are the two most popular ones. A domain name has two or more parts separated by dots and consists of some form of an organization's name and a three letter or more suffix. For example, the domain name for IBM is ""; the United Nations is "." The domain name suffix is known as a generic top-level domain (gTLD). It describes the.
