Hamachi-gui is a graphical front-end to Hamachi, a populare zero-configuration VPN client.
Its tires to mimic the official Hamachi Windows GUI.
As much as I want to be nice it wouldn't be right given the high rating of this app. For me it was broken in just about every way possible. I tried numerous ways of installing and compiling it and they all ultimately failed with errors posted about missing config files and followed by segmentation faults. I should have realised when I saw that the last version of Ubuntu that had debs available was Hardy! End result: after hours wasted I still couldn't get this to work properly. Recommendation: Use Haguichi instead as it's awesome (http://www.haguichi.net/)