Most tourist visa's do not allow you to work (even remotely). I'm sure tons of people do it, but this is basically allowing people to legally "travel" the country for 6 months while explicitly working.
To my knowledge only the UK, Australia and Canada will allow remote work on a visitor visa with the caveat that the business must be based outside the country.
Last time I read Canada's (several years ago), they allow you to travel for "business meetings" (including conferences), but I don't believe you can technically use it to "work" in Canada.
Basically, you can travel to meet a Canadian business - but you shouldn't be planning to travel just to do your job.
I’m paraphrasing slightly but they said work performed on the internet by someone not usually resident in Canada was permitted if the employer wasn’t a Canadian company.