Over the last year or so it seems like TransferWise has rapidly come onto the scene & taken over much of the landscape for our international contractor payments. The fees tend to be much lower than existing alternatives; importantly, the administrative friction is incredibly low, too. We're able to handle international payments essentially the exact same way we do with most other vendor & contractor payments, via ACH transfers.
It's saved us a ton of time/hassle, even ignoring the fee savings (which have been somewhat substantial for most countries & currencies).