Rootless

XDirectFB project is a rootless X Server using DirectFB windows for X11 toplevel windows. This way you can adjust the opacity of every application with your mouse wheel (while holding CapsLock or Meta down over a window). More details about these shortcuts can be found in the DirectFB README.... Platforms: *nix

OroborOSX is an X11 environment designed for use in rootless mode with XDarwin on Mac OS X. The source code is also available.Features include:X11 windows are interleaved with Aqua windows (the usual rootlessXDarwin implementation brings all X11 windowsin front when one is clicked);Clicking in a... Platforms: Mac