engines

real-time search Engines:
http://topsy.com/
http://www.oneriot.com/
http://www.scoopler.com/
http://www2.sandbox.google.com/
http://www.scour.com/search/web/Chupacabra
http://collecta.com/

strange search engines:
http://www.copyscape.com/
http://www.artcyclopedia.com/
http://tools.seobook.com/authority-finder/
http://www.kazzoom.com/
http://www.oamos.com
http://parkingspots.com/

visual search engines:
http://labs.systemone.at/retrievr/
http://tineye.com/
http://www.oamos.com

meta Search Engines:
http://www.dogpile.com/
http://clusty.com/
http://www.xoost.com/search.php

mobile search engines:
http://www.kooaba.com/
http://www.acrossair.com/
http://www.taptu.com/
http://vark.com/

vertical Search engines (specialised on a topic) :
http://furman.worldcat.org/
http://portal.mace-project.eu/Home
http://www.liveplasma.com/
http://www.bing.com/

search engines with visual / logical navigation of search results (other than plain list of results):
http://mrtaggy.com/
http://www.viewzi.com
http://www.ujiko.com

http://kartoo.com/flash04.php3
http://www.touchgraph.com/TGGoogleBrowser.php?start=ubicomp&signed=false
http://search-cube.com/
http://middlespot.com/search.php
http://www.oskope.com/
http://www.nexplore.com/
http://www.eyeplorer.com
http://www.ziipa.com/
http://www.ziipa.com/
http://trexy.com/

search engines based on non-roman alphabets:
http://www.baidu.com/
http://www.yandex.com/

people search:
http://www.pipl.com/

Semantic Search Engines:
http://www.hakia.com/
http://powerset.com/
http://www.spific.com

music:
http://www.skreemr.com/

research and experimental search engines:
http://www.shmoogle.org
http://perspectoma.com/

dead search engines:
http://answers.wikia.com/wiki/What_was_Wikia_Search
http://www.goshme.com/login.jsp

’soon’ to be born search engines:
http://www.blekko.com/

social search engines:
http://www.mahalo.com/
http://thepiratebay.org/
http://porqpine.com/

natural language search engines:
http://www.wolframalpha.com/
http://www.trueknowledge.com/
http://www.hunch.com/

document search engine:
http://www.scribd.com/
http://issuu.com/

privacy safe search engine:
http://www.yauba.com/

kids and religious search engines:
http://quinturakids.com/
http://www.milkmoon.de/
http://www.crossbot.de/

art related:
http://rhizome.org/art/exhibition/googleshow/

synaesthetic Search
http://www.cs.stevens.edu/~tmsearch/

audio-visual Search
http://sapir.isti.cnr.it/index

keyword-suggestion search engine:
http://www.searchthetail.com/
http://www.misspelling-generator.org/

doing ‘good’ while searching:
http://www.goodsearch.com/
http://www.ecosia.org