Currently I am renting a VPS from VPS.net running Gentoo. How can I run "X11" applications remotely without installing a full GUI on the VPS. What is the minimum pieces of "X11" I would have to install.

This server is intended to be used as a development server for graphical and non-graphical applications.

This is Gentoo I should be able to build the packages without the "extra" packages. I just need to know what would be required to get these applications to run on the server and use a remote "X11" server over ssh.