One of the most important software /program for information retrieval on the web is a search engine. On the intrrnet, a search engine is a coordinated set of programs that receives your search request, compares it to the entries in the index, and returns results to you. A user inputs a search term, and the search engine attempts to match this term to categories or keywords in its catalog of world wide web sites. then search engine generates a list of sites that match to keyword provided by user according to rank. Today the most popular search engiene is Google , Yahoo. Google is avialable in google.com.np for Nepal
