MenuKiosk allows you to quickly access your kiosks via VNC protocol for remote control. It's using Apple Screen Sharing feature. You just need to enable Screen Sharing on each kiosk that you want to monitor (option available in macOS preferences).
With MenuKiosk, you can always edit the list of kiosks from Apple menubar, and enter related information (name, IP address, login and password).
What’s new in version 1.1.0
New Preferences window
You can now setup the automatic start at launch of the computer