X Window System - Wikipedia

Xgl

X Window System, Xディスプレイマネージャー, デスクトップ環境 is 何｜ほげほげテクノロジー

X Window System - Wikiwand

Windowing system - Wikipedia

In the GUI system, the window that is currently in use called which window? - Quora

Tuula (@tuulap@) - Mastodo

File:Xlib and XCB in the X Window System graphics stack.svg - Wikipedia

Wikipedia Search Provider - GNOME Shell Extensions

Taylor Lorenz: Twitter will officially rebran… - Mastodon

Unix-like - Wikipedia

Windows 3.0 - Wikiwand