X Window Authorization: System, Computer Program, Server, Network, User (Computing)

X Display Manager (Program Type): Window System, Login Session, Server (Computing), Computer,

Client (Computing): Application software, Computer system, Server (computing), network, Peripheral device, program,...

X Resources: Window System, Parameter, Computer Program, Button (Computing), Background Color

XFixes: X Window System, Keith Packard, Computing, KDrive, X.Org Server, Computer Hardware