Similar to Xウィンドウマネージャ

LessTif

LXDE

MATE (desktop environment)

Mesa (computer graphics)

Metisse

MIT License

OPEN LOOK

PHIGS

Portland Project

Project Athena

Qt (software)

Rxvt

The Open Group

Tk (software)

Unity (user interface)

WxWidgets

X Toolkit Intrinsics

XDM (display manager)

X.Org Foundation

X.Org Server

X11 color names

XBill

X BitMap

XCB

XDarwin

Xeyes