Search Engine

Search engines are programs that search documents for specific keywords and return a list of the documents where the keywords were found. A search engine is really a general class of programs; however, the term is often used to specifically describe systems like Google, Bing, and Yahoo! Search that enable users to search for documents, articles, web pages, and videos on the World Wide Web.

Web Search Engines

Typically, Web search engines work by sending out a spider to fetch as many documents as possible. Another program, called an indexer, then reads these documents and creates an index based on the words contained in each document. Each search engine uses a proprietary algorithm to create its indices such that, ideally, only meaningful results are returned for each query.

As many website owners rely on search engines to send traffic to their website, an entire industry has grown around the idea of optimizing Web content to improve placement in search engine results. Search engine optimization (SEO) uses keywords as appropriately and specifically as possible to make a web page more prominent.

Common Search Engines and Tools

In addition to Web search engines, other common types of search engines and software include the following:

Desktop Search Tool

A desktop search tool is a form of offline search that allows you to browse your computer for files rather than searching the Internet.

Metasearch Engine

A meta search engine queries other search engines and then combines the results that are received from all.

Blog Search Engine

Blog search engines search the blogosphere and only index and provide search results from blogs (Web logs).

Enterprise Search

There are also enterprise search tools for searching both structured and unstructured data to make better use of corporate data.

Recommended Reading: Webopedia’s How Web Search Engines Work.

Vangie Beal
Vangie Beal
Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.

Related Articles

Human Resources Management System

A Human Resources Management System (HRMS) is a software application that supports many functions of a company's Human Resources department, including benefits administration, payroll,...

How To Defend Yourself Against Identity Theft

Almost every worldwide government agency responsible for identity theft issues will tell you the same thing: The first step to fighting identity theft is...

Infographic

An infographic is a visual representation of information or data. It combines the words information and graphic and includes a collection of imagery, charts,...

Phishing

What is phishing? Phishing is a type of cybercrime in which victims are contacted by email, telephone, or text message by an attacker posing as...

ScalaHosting

ScalaHosting is a leading managed hosting provider that offers secure, scalable, and affordable...

HRIS

Human resources information system (HRIS) solutions help businesses manage multiple facets of their...

Best Managed Service Providers...

In today's business world, managed services are more critical than ever. They can...