Search Engines
Google
now dominates the field
KartOO
graphically displays and clusters its results
Internet Archive
Surf old sites no longer on the web or for previous versions of current sites. The project was once known as Alexa (was at alexa.com). It now allows searching !!!!!!!! plus it shows related words and a time plot of frequency
Teoma
FindArticles
indexes a number of consumer and online periodicals
DMOZ
the Open Directory (used as an index source by several search engines)
DWOZ
sort of like DMOZ, but for webmasters (lists webmaster resources)
DayPop
allows searching only current events (recently posted pages)
All Info UK
a reviewed UK search engine
Mooter
a visual clustering engine - very helpful for finding additional search terms for google!
AY-Up
uses Open Directory, allows stemming and other tools under the search option tab
Wise Nut