The following websites are some of my favourites.
Absent Voters Lists http://www.leeds.gov.uk/ Excellent site giving World War 1 Leeds absent voters and their regiments
Appleby one-name study group http://www.geocities.com/Heartland/Woods/2434/
Architectural Heritage UK http://www.imagesofengland.org.uk Photographs by the National Monuments Board include cathedrals, castles, stately homes, inns, medieval barns and industrial buildings
BDM for Australia http://www.coraweb.com.au/bdmau.htm
http://globalgenealogy.com/gazette.htm Canada's on line gazette
British History Online www.british-history.ac.uk
http://www.genuki.org.uk/big/easter/ Date calculator
Convict listing http://istg.rootswweb.com/index2.html ships and passenger lists
Cumbrian Genealogy http://jennylittle.members.beeb.net/index.htm
http://www.ex.ac.uk/~RDavies/arian/current/howmuch.html tells you what a sum is worth now, useful for wills, house purchase, clothes etc
Deaths http://dnausers.d-n-a.net/leodis-leeds/Certainty.html There is a really excellent article on deaths and burials in Leeds on Keith Feeney's site.
Family History online http://www.familyhistoryonline.net/database/index.shtml
Family Search http://www.familysearch.org
Historical Directories http://www.historicaldirectories.org/
Lancashire Wills are indexed http://www.xmission.com/~nelsonb/lws.htm
Leeds http://dnausers.d-n-a.net/leodis-leeds/Certainty.html There is a really excellent article on deaths and burials in Leeds on Keith Feeney's site.
The East of London Family History Society http://www.eolfhs.org.uk/eolintro.htm
The National Archives http://www.documentsonline.nationalarchives.gov.uk//
UTAH 300,000 burial transcriptions, along with search ability of death certificates.
New Zealand and Australia http://fhr.kiwicelts.com/index.php
Society of Genealogists http://www.sog.org.uk/index.html
Surname Distribution www.spatial-literacy.org/uclnames/surnames.aspx
The Victoria Times Colonist (Victoria British Columbia) archives from 1858 - 1910 are now on line and searchable. http://britishcolonist.ca/
Contains all the issues of the British Colonist (also called The Daily British Colonist, the Daily Colonist, and other variants) from its first issue in 1858 to June of 1910.
Victorian London http://www.victorianlondon.org/frame-maps.htm
Cambrian Index on line http://www.swansea.gov.uk/index.cfm?articleid=8464
War Memorials National Inventory of War Memorials http://www.ukniwm.org.uk/
York Minster Library Art Gallery Building Exhibition Square York YO1 7EW Tel 01904 611 118
Borthwick Institute http//:www.york.ac.uk
Yorkshire Film Archive http://www.yorkshirefilmarchive.com
My favourite site is Christine Amsden's http://www.dalesgenealogy.com/