[donna]

Enter what you want to calculate or know about
http://www.wolframalpha.com/
Infomine: built by a pool of libraries in the US
http://infomine.ucr.edu/
WWW Virtual Library: oldest catalog on the web
http://vlib.org/
Complete Planet: 70,000+ searchable databases and specialty search engines
http://aip.completeplanet.com/aip-engines/browse?thisPage=%2Fbrowse%2Fbrowse.jsp&successPage=%2Fbrowse%2Fbrowse.jsp&errorFlag=&errorMsg=&event=loadPageEvent&directPage=&directSection=4&treeQueryExpr=&treeQueryType=phrase&treeQueryTarget=tree
Infoplease: encyclopedias, almanacs, an atlas, and biographies
http://www.infoplease.com/index.html
DeepPeep: forms that query databases and web services for information
http://www.deeppeep.org/
IncyWincy: meta-search engine by tapping into other search engines and filtering the results
http://www.incywincy.com/
DeepWebTech: 5 search engines for specific topics - science, medicine, and business
http://www.deepwebtech.com/
Scirus: pure scientific focus - journals, homepages, courseware, patents
http://www.scirus.com/srsapp/
TechXtra: concentrates on engineering, mathematics and computing
http://www.techxtra.ac.uk/index.html

[FourtySeven]

List of search engines note.

Thanks.