There are a variety of famous, popular and remarkable search engine tools are working on the World Wide Web which are actually remotely accessible programs that will allow you to do keyword searches for your desired information on internet. Search tools or researching tools would cover the titles of documents, URL’s, headers or full text. Yahoo, Google, MSN, Yippy, ASK, Bing, Wikipedia, Internet Archive and many more. But it is not necessary that the information you are getting from one search engine is relevant to the result of other search engine’s information. Every online searching tool has its own configuration, server and database which is definitely not identical with the other one. These searching tools will give you your required knowledge on each and everything. In fact if you want your hair dresser’s or plumber’s number. You can easily search it via these searching tools.