A Web search engine is a program designed to search for information on the World Wide Web. Information may consist of web pages, images and other types of files, including documents and PDFs on the internet. Search engines operate algorithmically or are a mixture of algorithmic and human input.
Major Search Engines
Some popular major search engines […]

Web Directory
A web directory is a kind of website on the World Wide Web that specializes in linking to other web sites and categorizing those links. It displays web sites by categories and sub-categories. Web directories are totally different from Search Engines which display a list of web pages if you a type a key […]