[tensor]

Beware of VirtualBox. While part of it is free, it's not very useful without the extension package. This package is easy to download on the same website as VirtualBox, but... it's not free.

Even better Oracle tracks the ips that download this extension and after a suitable amount of time they will come knocking on your company's door asking for an insulting amount of money (e.g. more expensive than VMware) or get sued. You need to read the fine print of the additional Eula printed in really small letters on the VirtualBox website to figure out the extension isn't free. It's almost a honeypot tactic. Scummy.

[folmar]

I don't know how Macs fare, but on Linux the extension package is not really a great feat, mostly adds RDP and some faster USB modes, but USB passthrough is marginal at most anyway.