An example of a metacrawler is Dogpile. It is a search engine that fetches results from various search engines, directories, and databases to provide users with a comprehensive list of search results.
Search engines, Strip Club List website, phone book, Yellowbook website.
Some popular search engines include Google, Bing, Yahoo, and Baidu. Search engines are online tools that allow users to search for information on the internet by entering keywords or phrases. These search engines use complex algorithms to crawl and index web pages, returning relevant results to the user based on their search query.
There are many popular search engines. The most major include:GoogleYahoo!Ask (with Ask Jeeves and Ask for Kids)There are many other minor ones too though. See the Related Link, an article from Wikipedia about search engines, for a list of the current search engines in operation and when they were launched. The list is on the right side at the top of the article.
Search engines have a common Web Directory Open Director Project (Dmoz) Get listed in appropriate category of Dmoz, all the search engines will list your site further. Other way is to manual submission in different web directories like Master moz, the best website, Yahoo director, Bing directory and many others.
All search engines are free to use, but if you are talking about a "free" search engine on which to list your website, then the answer is yes also. Getting your website listed on a website in the "organic areas" is free, but takes time and requires you to correctly optimize your website for search engines. However, if you want your website listed in the "paid search" areas of search engines then you will need to pay a fee (normally a per click fee that can be anywhere from $0.10 to several dollars per click).
That type of engine is called a spider, and the search engine Dogpile works in this way.
A meta-search engine is a search tool that sends user requests to several other search engines and/or databases and aggregates the results into a single list or displays them according to their source. Metasearch engines enable users to enter search criteria once and access several search engines simultaneously.
Crawler based search engines such as google .com HUman powered directories and Hybrid search engines
Dogpile is a metasearch engine that fetches results from multiple search engines (such as Google, Yahoo, Bing) and displays them in one combined list. It removes duplicates and ranks results based on relevance. When a user enters a query, Dogpile sends it to various search engines and then aggregates the results for the user to browse.
Spider-Based Search Engines.Directory-Based Search Engines.Link-Based Search Engines.Hybrid Search Engines.Meta Search Engines
Search engines have two major functions: crawling and building an index, and providing search users with a ranked list of the websites they've determined are the most relevant. Thanks, Ekavat