Yes, you can download H9 Control from the H9 support page:
https://www.eventide.com/AudioDivision/Support/Stompboxes/H9.aspx
Incidentally, you can also connect to an H9 from H9 Control on Windows using Bluetooth, but most Windows computers don't come with a pre-installed Bluetooth device. Most people who want to connect that way have to buy a Bluetooth dongle.
