Diladele B.V. also provides a pre configured version of Web Safety and Squid proxy as VMWare Virtual Appliance (VA). This can be downloaded from https://www.diladele.com/virtual_appliance.html.
Currently we have two different versions of virtual appliance - one built with Ubuntu 16 LTS (recommended) and one built with CentOS 7 (experimental). Both virtual appliances are designed to be run in VMWare vSphere or ESXi. The installation scripts from articles Ubuntu 16 LTS x86_64 and CentOS 7 x86_64 were used to prepare these virtual appliances.