Squeak has a native VNC server, so you can use the development environment, without running a full GUI desktop on the operating system. There's also a Seaside a

Squeak has a native VNC server, so you can use the development environment, without running a full GUI desktop on the operating system. There's also a Seaside admin app that you can use to start and stop the VNC server, so you don't leave it open all the time. On a remote server it's a touch slow, but otherwise it works great.