One thing to keep in mind is that the selection is dependent on your local library, so the listing is a sum of the subsets but you can get a general idea of the content that's available there.
> the selection is dependent on your local library
It VERY much is. Used my community college login, and there was nothing at all, anywhere. My login for a largish state college was a little better, but not much...maybe 50 total items and all in the documentary, gender studies, and one other section.
Kanopy should probably work the UI a little for linked accounts to places that have nothing at all to offer...rather than having you create the login, verify an email, etc.
> Is there any way to know, with JustWatch, which free streaming services are available in Canada?
Yes, once you sign up there's a provider selection wizard that allows you to see a list of free services in your selected country. You can then also "batch add" all of them to your providers so they are always selected automatically.
One thing to keep in mind is that the selection is dependent on your local library, so the listing is a sum of the subsets but you can get a general idea of the content that's available there.
Disclaimer: I work at JustWatch