Even Logmein should work since it is Java and browser based. The target computer has to have windows, but the Driving computer can be linux...
What are the system requirements for LogMeIn?
LogMeIn Free/Pro/IT Reach & Remotely Anywhere
On the target computer, the operating system must be Windows 2000/Server 2000, XP 32 bit or 64 bit or Server 2003 32 bit or 64 bit and Vista 32 bit or 64 bit; Mac OSX 10.4.6 or higher (LogMeIn Free only). Also a web browser that supports frames is necessary, which most browsers do. It is also essential that there be a constant Internet connection (cable, ISDN, DSL or better); otherwise, the user will need to know when the computer is online. Lastly, Windows Installer Runtime is required for installation (this is a free download from Microsoft.com).
On the local computer, a Web browser that supports frames is required. Remote Control requires Internet Explorer 6 or later or Firefox if using ActiveX, or, if not, a Java-enabled browser, and also SSL (secure socket layer) support. An internet connection is necessary. It is also recommended that the browser be up-to-date, with a screen resolution that is the same or higher than the remote computer.