I don't see any reason preventing people from doing so technically.  I've helped people in other countries use Simply Accounting Canadian and the early versions of Sage 50 Canada.

But why would you want to (unless you are running a UK company)?  They are completely different programs and don't have a way to talk to each other directly.

I need an option to make it work with 3rd party apps. Import export Purchase orders, tax rates, suppliers, stock records...

I'm using Zynk, and they don't provide connectors to CA, and very limited tasks for US version. They said that is because of how Sage is written...

They do seem to provide an ODBC connector so you could theoretically build your own.  However, the final format is still dependent on the target solution or repository for the data.

They do seem to provide an ODBC connector so you could theoretically build your own.  However, the final format is still dependent on the target solution or repository for the data.