All Engineering: http://www.ub.lu.se/eel/ae/
Alta Vista: http://altavista.digital.com/
ARGOS: http://argos.evansville.edu/
ComWeb: http://www.cios.org/www/comweb.htm
Euroferret (Muscat Euroferret Index of European Web Sites): http://www.muscat.co.uk/euroferret/
Europe Physics Broker: http://www.physik.uni-oldenburg.de/Harvest/brokers/EuroPhysNet/PhysDep/
EuroSeek: http://www.euroseek.net/
Excite: http://www.excite.com/
Fireball: http://www.fireball.de/
GERHARD: http://www.gerhard.de/
HIPPIAS: http://hippias.evansville.edu/
HotBot: http://www.hotbot.com/
Hot Meta Broker (MetaWeb Project Australia): http://flare.dstc.edu.au:8017/search.html
Infoseek: http://www.infoseek.com/
Kolibri: http://www.kolibri.de/
Lycos: http://www.lycos.com/
Magellan Internet Guide: http://www.mckinley.com/
MathN Broker: http://www.mathematik.uni-osnabrueck.de/harvest/brokers/MathN/
MathSearch: http://www.maths.usyd.edu.au:8000/MathSearch.html
Nordic Web Index: http://nwi.ub2.lu.se/?lang=uk
SWEMETA: http://gungner.ub2.lu.se/cgi-bin/egwinit.pl/egwirtcl/metatargets.egw?swemeta
DANMETA: http://gungner.ub2.lu.se/cgi-bin/egwinit.pl/egwirtcl/metatargets.egw?danmeta
Northern Light: http://www.nlsearch.com/
UK Academic Directory: http://acdc.hensa.ac.uk/
Web Core: http://www.di.uminho.pt/wc/
WebCrawler: http://www.webcrawler.com/