General

• Baidu (Chinese, Japanese)
• Bing
• Google
• Yahoo!
• Yandex.com
• Yodao (Chinese)

Metasearch engines

• Blingo
• Yippy (formerly Clusty)
• DeeperWeb
• Dogpile
• Excite
• HotBot
• Info.com
• WebCrawler

Geographically limited scope

• ZipLocal

Accountancy

• IFACnet

Business

• Business.com
• GenieKnows (United States and Canada)
• Nexis (Lexis Nexis)
• Justdial

Enterprise

• Funnelback: Funnelback Search
• TeraText: TeraText Suite

People

• Comfibook
• Ex.plode.us
• InfoSpace
• PeekYou
• Spock
• Spokeo
• Wink

Public Records by state: BRBPub.com