Website for the family history magazine "Ancestors" published by the National Archives in the UK. You can search back issues of the magazine here.
http://www.ancestorsmagazine.co.uk/index.php
Contains the names of about three million Jews who died in the Holocaust. Information was submitted by surviving family members and can include quite a lot of detail. There is also a smaller survivors' database.
http://www.yadvashem.org
Chronological list of passenger ships arriving in Western Australia 1829-1889 including some passenger lists. Part of the Perth Dead Persons' Society website.
http://members.iinet.net.au/~perthdps/shipping/mig-wa.htm
Transcriptions of baptisms, marriages and burials, census records, memorial inscriptions and more.
http://www.hunimex.com/warwick/opc/opc.html
Collect Britain is part of the British Library's website and includes some medieval maps, a database of English accents and digitised copies of the Penny Illustrated newspaper.
http://www.collectbritain.co.uk
Dictionary of old occupations.
http://homepage.ntlworld.com/hitch/gendocs/trades.html
Discusses how much old monetary values would be worth today.
http://www.projects.ex.ac.uk/RDavies/arian/current/howmuch.html