Dogpile - Popular metasearch site owned by InfoSpace that sends a search to a customizable list of search engines, directories and specialty search sites, then displays results from each search engine individually.
Metacrawler - MetaCrawler.com utilizes metasearch technology to compile results from many of the Web's major search properties, delivering more relevant and comprehensive results every time you search.
Vivisimo - Enter a search term, and Vivismo will not only pull back matching responses from major search engines but also automatically organize the pages into categories.
Popular Search Engines
AltaVista - One of the oldest of the search engines on the Internet. It has a long history and is a very well supported product. Their software is rock-solid and their query interface is very powerful.
Google - In addition to providing easy access to billions of web pages, Google has many special features to help you to find exactly what you're looking for
Yahoo - The company is perhaps best known for its web portal, search engine, Yahoo! Directory, Yahoo! Mail, news, and social media websites and services.
Ask.com - Ask.com offers many innovative tools to help you get the information you need quickly and easily.
Specialized Search Engines
MapQuest.com- Search for the location of places in the real world. Plus get driving directions.