U    ↑
UAP (5)	UBC (15)
UBCIM (8)	UBIF
UDC (305)	UDC Master Reference File (8)
UDC MRF	UDC-MRF (2)
UDDI	UDK-Thesaurus
UFC (3)	UFORDAT
UKAT (2)	UKLAN
UKMARC (14)	UKOP
ULIDAT	Ullmann's Encyclopedia of Industrial Chemistry
Ulrich (3)	Ulrich's plus (2)
Ulrich's subject headings	Ultimedia Manager
Ultra (2)	ULTRASEEK (2)
Ultraseek Server	UMI (5)
UMI ProQuest -> ProQuest	UML (2)
UMLS (32)	UMPLIS (2)
UMTS (7)	Umwelt-CD
Umweltdatenkatalog	UNBIS
UnCover (18)	UnCoverWeb
UNESCO Thesaurus (6)	Unicode (7)
Unicom 3.1	UNIMARC (62)
UNIMARC Authorities	UNIMARC for classification data
Union Catalogue of Books	Union List of Artist Names (2)
Union Lists of Serials	UNISIST (9)
United Nations Classification Scheme	UNITERM (4)
Uniterm-Verfahren (2)	Universa
Universa Premium	Universal Binary Classification
Universallexikon 2001	Universallexikon 2002
Universallexikon 2003	UNIX
URC (3)	URI (4)
URICA (2)	URL (8)
URN (14)	US Trade Thesaurus
USBC	USE
UseMARCON (3)	Usenet (6)
USMARC (53)	USMARC community information format
USMARC for classification data (9)	USU KnowledgeMiner
Utlas (3)
V    ↑
Vademecum (4)	ValueBase
VASARI	Vascoda (36)
VBB	VCH Biblio (2)
vCuc (3)	VD-16 (7)
VD-17 (9)	VD-18 (7)
VD16 (6)	VD17 (13)
VD18 (2)	VDL (2)
Verbmobil (2)	Verity (11)
Verity Search	VERONA
VERONICA (10)	Verteilte Digitale Inkunabelbibliothek
Veturo	Vgl.: http://de.wikipedia.org; http://www.wikimedia.de
Via Voice Standard	VIAF (17)
ViaMichelin	VIBE
ViBSoz	VICAR
Videomuseum	Videotex (7)
ViewFinder (2)	ViFa (5)
ViFa "Judaica und Hebraica	ViFa BBI
ViFa Government Information	ViFa Medien
ViFa Medizin	ViFa Recht (3)
ViFaArt	ViFaHolz (2)
VifaMath	ViFaMed (2)
ViFaMusik	ViFaOst
ViFaPhys (4)	ViFaPol (5)
Vifarom (2)	ViFaTec (4)
ViFaWiWi	Vindex (2)
VINITI (3)	Vinz/Olzog
Virtual Globe -> Encarta Virtual Globe	Virtuelle Fachbibliothek medien buehne film
Virtuelles Bücherregal (2)	Vision
VisIT	Visual Bibliographies
Visual Bibliometrics	Visual Dataflex
Visual dBase (2)	Visual FoxPro (3)
Visual Interdev	Visual Knowledge Builder
Visual Mind	Visual thesaurus (2)
VisualAudio	VisuaLCSH
VisualSEEK	VitaminL
Vivaldi	Vivisimo (4)
VIVO	VK (2)
VK s. auch DBI-VK	VK-NW (4)
VKK	VKS
VLB (6)	VLB aktuell (6)
VLB online	VLBPlus-CD-ROM
VLib (4)	VÖBB
Voice Pro 10	Voila
Voila Pages Perso	vorarlberg.at
Vorarlberger Parlamentsinformationssystem	VOXEL-MAN
Voyager (2)	VRML (2)
Vrouwenthesaurus	VThK (2)
VTLS (3)	VUBIS
VuFind (6)	VxInsight
VZG (3)
W    ↑
W-index	W3C
Wahrig	WAI (2)
WAIS (22)	WAIS s. auch freeWAIS-sf
Waisda	Walhello
Wall Street Journal (2)	WAN
Warengruppen Buchhandel (3)	Warwick framework (2)
Warwick metadata (2)	Watson (3)
WBI	WDL
WDR (5)	Web 2.0 (60)
Web Clip Art Search Engine	Web Inspector
Web of Knowledge (3)	Web of science (52)
Web-Crawler	Web-Dewey
WEB.DE (23)	WebArcher
WebArchitect	WebAssistant
WebAuthor	WebBrowserIntelligence
WebCAT (4)	WebCompass (3)
WebCrawler (44)	WebCT (2)
WebCutter	WebDE
WebDesigner	WebDewey
WebDOC (8)	WebEdit
Webedit Pro	WebFerret (3)
WebIFQ	Webinator
WebInspector	WEBIS (5)
WEBIX	WebLib
WebMaker	WebMD.com
WebOde 1.1	Webometrics
WebOnto	WebPrinter
WebPro	WebPublisher (2)
WebQuery (2)	WebRetrieve
WebSEEK (2)	WebSeeker (2)
WebSPIRS (3)	WebSPIRS-5
WebSQL (2)	Webster encyclopedia (2)
Websurfer (2)	WebTagger
WebTerm	Webtop
WebViz	WebVoyage 2000
WebWatcher	WebWhacker (3)
WebZ	WeChat (2)
Weinberg-Report	Weixin (2)
Weltchronik (www.weltchronik.de)	Wennrich
Wer liefert was (3)	Werkstoffe-Thesaurus
Western-Lexikon	WESTLAW
WevCrawler	Where is it
WHIRL	Whitaker's Books in Print
Who' who	Who's who
WHOIS	WhoWhere
Wiki (14)	Wikia (2)
Wikia Search	WikiaSearch (2)
WikiD	Wikidata (7)
WikidSmart	Wikileaks (3)
Wikimedia (2)	Wikipedia (171)
Wikipedia Reference Desk	Wikpedia (de.wikpedia.com)
WILBERT (2)	WILSONDISC (7)
WilsonLine	WilsonWeb
WIN (3)	Win MX
Windows	Windows Media Technologies
Windows Search 4.0	Windows95
WindowsNT	Windream
WinFiler 1.2	WING (4)
Wing STC	WING-Graph
WING-IR	WING-Path
Wink	WINMAX
WiNShuttle	WinSPIRS (9)
WinTapestry	WinWeb (2)
WISE	WiseBot (2)
Wisenut (3)	Wissen 2006
Wissen unserer Zeit	Wissen XXL (2)
Wissen.de (7)	Wissen.de (www.wissen.de)
Wissen.de Lexikon 2003 (Bertelsmann)	Wissen.de Lexikon 2004 -> Große Wissen.de Lexikon 2004
Wissen.de Universallexikon 2003	Wissensnetz (www.wissensnetz.de)
WissKI	WL-index
WLN (6)	WMS
Wolfram Alpha (3)	Wolfram Language
Wondir	Word cloud (2)
WordBars	WordCruncher (7)
WordFocus	WordHoard
WordManager	WordNet (31)
WordSmith (4)	WordSurfer (2)
Wordsworth encyclopedia	World Academic Database
World Atlas	World Atlas s.a. New Millennium World Atlas
World Biographical Index	World Book (6)
World Book encyclopedia	World Book Multimedia Encyclopedia
World Digital Library Project	World Email Directory
World Factbook	World Factbook (www.odci.gov/cia/publications/factbook/)
World News	World of Science
World on CD-ROM	World Trade Center State
World Wide Web Directory	WORLD1
WorldCat (42)	WorldCat Identities (2)
Worldcat local	Worldcom
WorldLingo	WorldShare
WorldShare Management Services	WortNet
WOSA	Wowowo
WPI	Ws ist was (www.wastistwas.de)
WSDL	WSMO
WTI-Thesaurus	Wunder unseres Körpers
WWW (320)	WWW Worm (16)
www.digitalstock.de	www.fotolia.com
www.istockphoto.com	www.panthermedia.net
www.shutterstock.com	www.still.de
Wxcite
X    ↑
X-Friend	x-friend 0.2 Beta
X.400 (3)	X.500 (4)
X1 Desktop Search	X1 Search 3.0
Xanadu	Xapian
XBRL	Xchange
xFind	XFML (2)
xfriend	XHTML (5)
xiModul SD	Xindice
Xing (2)	Xipolis (3)
Xipolis (www.xipolis.net)	xipolis.net
XLink	XLS
XMage	XMetal
XMetal Author 4	XML (150)
XML Editor Professional Edition 2.4	XML Schema
XML Spy	XML Spy 2004
XML Writer 2.13	XMP
Xnap	XOBIS
XOL	XOPAC
Xopus	XPath (3)
XpertRule	Xpress Finder
XQL (2)	XQuery (2)
XrefHT	XSD
XSL (3)	XSLT (6)
XSoft's InContext	XTM
XTree (3)	Xview
Y    ↑
Y-NET	Yago (4)
Yahoo (107)	Yahoo Desktop
Yahoo Desktop 1.2	Yahoo Desktop Beta
Yahoo Desktop Search 1.1	Yahoo! Answers (2)
Yahoo! Clever	Yahoo! Kids
Yahooligans (4)	Yahoolihans
Yahoologans	YARD
YaSemIR	Yasni
Yewno	Ygnius
Yopi	Yorck-Projekt
Yotophoto	You, We & Digital
Your Personal Net	YouTube (12)
yovisto
Z    ↑
Z39.19 (7)	Z39.4 (2)
Z39.50 (107)	Z39.50/SRU
Z39.53-2001	Z39.58
Z44-082	ZACK (3)
ZADI	ZBMed
ZCI encyclopedia	ZD (6)
ZD CD	ZDB (27)
ZDB CD	ZDB-CD (2)
ZDB-Systematik	ZDE-Thesaurus (2)
ZDF (5)	Zedler (2)
Zeitungsindex	Zentralblatt für Didaktik der Mathematik
Zentralblatt für Mathematik (27)	Zepheira (2)
ZETA (4)	ZID (4)
ZigZag	Zipf-Gesetz (12)
Zipf-Mandelbrot-Gesetz	Zipf-Verteilung (3)
Zitate.at (www.zitate.at)	Zkn3
ZMS	ZNavigator (3)
Zoek	Zooniverse
Zotero (3)	ZPID (2)
Zurfride	ZurfRider
ZVDD (2)	ZyImage (4)
ZyIndex (10)	zynergy-index.