One of the most popular search engines, Google helps users to search the Web, maps, and images. It includes PageRank, caching, and an option to find similar pages.
Another highly used and popular search engine, Yahoo allows one to search the web and stay up-to-date on the news.
Formerly known as "MSN Search, the Bing search engine offeres a very user friendly environment to search topics, news, photos & videis, maps, travel, entertainment, and more. In addition, the home page picture changes every day with "hidden eggs" of information, as well as "popular now" quick links.
One of the original parallel search engines, Metacrawler gives the reader "are you looking for" suggestions in addition to its results.
Dogpile is one of the favorite engines, as a dog goes and searches for you. It is similar to Metacrawler, but has its own unique traits (like "fetching").