About.com
http://www.about.com/
With more than 900 topic sites (Guide sites), About.com offers expert, quality content that helps users find solutions to a wide range of daily needs – from parenting, health care and technology to cooking, travel and many others.

Ask.com
http://www.ask.com/
Every day, millions of people come to us with questions - personal and professional, easy and difficult, silly and serious. At Ask.com, our mission is to answer these questions with the best information from the web and from real people - all in one place.

Bing
http://www.bing.com/
Bing is a search engine that finds and organizes the answers you need so you can make faster, more informed decisions. Formerly Live Search, Windows Live Search, and MSN Search. Offered by Microsoft.

Dogpile
http://www.dogpile.com/
InfoSpace created the Dogpile search engine because your time is important to us. Powered by Metasearch technology, Dogpile returns all the best results from leading search engines including Google, Yahoo! and Bing, so you find what you’re looking for faster.

Google
http://www.google.com/
The top choice for searching the Web

Kids Click!
http://www.kidsclick.org/
Backed by librarians, KidsClick lists about 5,000 web sites in various categories.

Yahoo
http://www.yahoo.com/
Yahoo! is an Internet portal that incorporates a search engine and a directory of World Wide Web sites organized in a hierarchy of topic categories. As a directory, it provides both new and seasoned Web users the reassurance of a structured view of hundreds of thousands of Web sites and millions of Web pages. Yahoo also offers free email and group options to create a closed group . Note: On July 29, 2009, Microsoft and Yahoo! announced a deal in which Bing would power Yahoo! Search. All Yahoo! Search global customers and partners are expected to have made the transition by early 2012.