ADAM: http://www.adam.ac.uk/
Argus Clearinghouse: http://www.clearinghouse.net/
ARIADNE: http://ariadne.inf.fu-berlin.de:8000/
Biz/ed: http://bized.ac.uk/
BUBL Link: http://bubl.ac.uk/link/
City.Net: http://www.city.net/
CyberStacks(sm): http://www.public.iastate.edu/~CYBERSTACKS/
Deutscher Bildungsserver: Unterrichtsmaterialien und Projekte online: http://dbs.schule.de/db/listen.html
DutchESS (Dutch Electronic Subject Service): http://www.konbib.nl/dutchess/
DINO: http://www.dino-online.de/
EELS (Engineering Electronic Library, Sweden): http://www.ub2.lu.se/eel/
EEVL (Edinburgh Engineering Virtual Library): http://www.eevl.ac.uk/
Galaxy: http://galaxy.einet.net/galaxy.html
GeoGuide (SUB Göttingen): http://www.sub.uni-goettingen.de/ssgfi/geo-home.html
InterCAT (OCLC): http://orc.rsch.oclc.org:6990/
Jubii: http://www.jubii.dk/
Länkskafferiet: http://www.ub2.lu.se/skolverket/index.html
LookSmart: http://www.looksmart.com/
Lycos a2z: http://a2z.lycos.com/
Lycos Top 5 %: http://point.lycos.com/categories/
Materials Organized by Mathematical Classification (Am. Math. Society): http://www.ams.org/mathweb/mi-mathbyclass.html
MathGuide (SUB Göttingen): http://www.sub.uni-goettingen.de/ssgfi/math-home.html
NetFirst (OCLC):
Information:
http://www.oclc.org/oclc/netfirst/netfirst.htm
Login:
http://www.ref.oclc.org:2000
NISS (National Information Services and Systems): http://www.niss.ac.uk/subject/index.html
OMNI: http://omni.ac.uk/
RUDI (Resource for Urban Design Information): http://rudi.herts.ac.uk/catsrch/catsrch.html
SOSIG: http://www.sosig.ac.uk
Systematisk Internetkatalog (Möndals Stadsbibliotek): http://www.molndal.se/bibl/subject.htm
UK Web Library: http://www.scit.wvl.ac.uk/wwlib/
Web.De: http://web.de/
WIRED Cybrarian (HotBot): http://www.hotbot.com oder http://www.wired.com/cybrarian
WWW Virtual Library: http://www.w3.org/hypertext/DataSources/bySubject/Overview2.html
Yahoo!: http://www.yahoo.com