.com Represents "commercial", and is the most widely used extension in the world. Most businesses prefer a .com domain name because it is a highly recognized symbol for having a business presence on the Internet.
.org For non-profit organisations .Represents "organization", and is primarily used by non-profits groups or trade associations.
.biz Represents "business". It is commonly used by businesses as an alternative to unavailable .com names.
.info For information services and signifies a "resource" web site.
.name For individuals' Personal Names. An individual can register a Personal Name, or a company or individual can register a fictional character to which it has rights.