LogMeIn - now available for the Mac
However, the downside to using a client-based VNC is that if you are on a trying to connect to a computer from a system that with access restrictions (say, a computer in an Internet cafe or in a school computer lab), you may not be able to access the necessary software to start the remote connection. That's where services like LogMeIn come in.
As long as your target computer has the LogMeIn client installed and is connected to the Internet, you can access that system from a different computer simply using your web browser. And although Mac users have been able to connect to Windows machine via LogMeIn for quite some time, the reverse was not true. Until now. Last week LogMeIn released the first full release of the LogMeIn client for the Mac. Right now, the free version of LogMeIn, which is sufficient for most home users, is available, and as the name implies, free. A free beta is also available for the LogMeIn Rescue (which is aimed at IT professionals or computer technicians, as it makes it easy to take control of a client's machine without having to pre-install software).
Bizarro World! LogMeIn has lots of different configuration options to make access to a remote system more secure/streamlined. For instance, a guest user account can be permitted to select LogMeIn users (who you specify), or full system access can be granted.
LogMeIn is available now for both Intel and PPC machines.