In Search of Your Canadian Past: The Canadian County Atlas Digital Project (McGill University)
I really admire resources put online by institutions - especially those that are free of charge. McGill University in Montreal, Quebec, has one such resource: In Search of Your Canadian Past: The Canadian County Atlas Digital Project. The majority of the atlases included are from Ontario, and while this resource is not browseable (you can’t look at the atlases page by page) you can do a search for the area of interest, or for a particular name. I like the ability to do a search for a particular township or municipality, and then generate a list of names referenced within that area.