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ct-oriented user interface User Account Control Toolkits for user innovation Active users User intent Acorn User Apple User Group Connection Lazy user model Z User Group User interface modeling User-Mode Driver Framework Unique user User–network interface Attentive user interface Atari ST User User activity monitoring User-subjective approach Journal of Organizational and End User Computing User environment management User-defined function Persona (user experience) Console user interface Windows USER Principles of user interface design Lead user Multi-user MIMO Web User First-time user experience Linux User and Developer Concurrent user History of the graphical user interface Multi-user dungeon Natural-language user interfac