Mir - The purpose of Mir is to enable the development of user interfaces shells.
Y Window System - Y Window System is a platform that allows you to improve the speed, working, and efficiency of the application in your operating system and helps you to increase the responsiveness of applications similar to any locally based app.
Wayland - Wayland is intended as a simpler replacement for X, easier to develop and maintain.
DirectFB - DirectFB is a web-based platform that provides you with complete access to a software library that you can use for the acceleration of graphics, handling the input devices, and others for your Linux operating systems.
xmodmap - The xmodmap program is used to edit and display the keyboard modifier map and keymap table that are...
X11 - X11 is no longer included with Mac, but X11 server and client libraries are available from the XQuartz project.