vboxhostd executes commands passed via VirtualBox guest properties on the host side.
Commands
Description
open
Run open (macOS), xdg_open (Linux) or start (Windows XXX not implemented) with the given value, which is supposed to be an URL (starting by http:, https: or mailto:)
Usage:
On host, start vbhostd
On host, run VBoxManage guestproperty set go-virtualbox vbhostd/open http://www.apple.com, to open the default browser at http://www.apple.com.
In Linux/macOS guest, run sudo VBoxControl guestproperty set vbhostd/open http://www.hp.com, to open the default browser at http://www.hp.com.