

Lochac herald - Crux Australis
Rouland's 'De Bello Armorum' Intro
Teceangl's 'Basic Conflict Checking
On-line O&A or here or here
This program "SCA Ordinary and Armorial Software" allows one to access the O&A database locally, with very powerful and intuitive search capabilities.
Parker's Glossary - James Parker's "A Glossary of Terms Used in Heraldry" is a late Victorian source on heraldry. It has lots of illustrations of people's arms, but mostly it's a dictionary. If the term is not in Parker's, you can be fairly certain that it's not been used by English-language heralds.
Heraldic Dictionary - A primer to aid in understanding blazons (descriptions) of heraldry. With illustrations of field divisions, animals, and inanimate charges
Blazoning of Creatures - great resource for the correct way to draw animals!
Blazon - cute Windows software design program
700+ heraldic images (zip file containing many images)
Guntrum's (zip file containing many images)
Alastair's mega-link list (list of links)
A number of links to SCA Rolls of Arms
Principality of Oertha (used CorelDraw v.9 to make the arms)
Heraldique Europeenne - Is in French, but lets you see heraldry by country, albeit redrawn in a modern style
'The Manesse Codex' - You can see all the illustrations by clicking on the link called: Tafeln der Manesseschen Liederhandschrift
Arval's Medieval Names Archive
Both source a great variety of cultures across the Known World, after many centuries
Aryanhwy's page of names articles
Norse names - The National and University Library of Iceland and Cornell University have started a cooperative project of large scale digitalization of about 380 000 manuscript pages and 145 000 printed pages. The material will consist of the entire range of Icelandic family sagas. It will also include a very large portion of Germanic/Nordic mythology (the Eddas), the history of Norwegian kings, contemporary sagas and tales from the European age of chivalry
on Modar's Heraldry page (http://www2.kumc.edu/itc/staff/rknight/Heraldry2.htm#Style, http://www2.kumc.edu/itc/staff/rknight/Heraldry2.htm#Book)
'The Heraldry cliché checklist'
'The Philosophical Roots of Heraldic Design' - by Viscountess Hilary of Serendip
'A Cursory Glance at Medieval Flags and Banners'
'Norris's Costume & Fashion, Vol. 2 1066-1485'
'King René's Tournament book'
Period scroll texts - Absolutely exhaustive source for illumination and other manuscripts on practically any subject