Mac OS X Leopard only: Our favourite free virtual private network client for the Mac, HamachiX, has been updated (finally!) to work with Leopard. HamachiX is a graphical front end to the Windows Hamachi product, and essentially it lets you access your Mac remotely over the internet as if it were on the local network. That means you can listen to shared iTunes libraries, remote control your Mac, and access file shares as well. HamachiX isn't as easy to use or quite as stable as the Windows version, but it lets you network with PCs running the client as well. Here's how to create your own virtual private network with Hamachi.