Twin is a text-mode window environment. It turns a text terminal into a X11-style display with window manager, terminal windows, and can also serve as display for remote applications. Each terminal window provides the functions of a text-mode Linux console. Twin runs on X11, libggi, itself, the Linux console, and any termcap/ncurses-compatible tty. It supports multiple simultaneous displays, and can attach/detach each display on the fly. [from freshmeat.net]
I do most of my development on a remote server. Since I'm a bash + vim type guy, that suits me just fine. I usually use screen. This allows me to create multiple virtual terminals as well as detach from the session and reattach later, perhaps from a different computer. Twin can do all this and more, but in a user friendly way! I'm just getting started, but it sure does look neat!