Google, perhaps the best, evaluates site popularity by checking number of
referrals. Using its advanced search page one can perform date-based
searches. Also try out Google's Image
Search, its Open Directory
format (that also orders websites by PageRank),
and its Language Tools
for quick translations.
For help with the growing number of options (including music and movie searches,
street maps and web page translations) there's the
Google Help Center. From the Google labs are prototypes of
Google Scholar search the content of academic literature, including peer-reviewed articles, books, and dissertations
AlltheWeb perform a search using five major search
options (Web pages, Pictures, Videos, MP3 or FTP files) and a sidebar reveals results in other
categories. Made the claim in June 2002 that it
searches more pages than Google
Think that you need a specialized search engine? Click here.
For an all-purpose look-up site check out Free
Online Lookups from MelissaData for not only addresses and phone numbers but
demographics and labor statistics by ZIP, information on Nonprofits, and
Standard Industrial Classifications.
Bartleby.com--combining "the best of both contemporary and classic reference
works into the most comprehensive public reference library ever
published on the web"