Buttery Taskbar - Save space on your screen by permanently hiding the taskbar when it's not needed.
HiddeX - Tiny portable freeware application for Windows that can easily hide any window, program, browser or...
task-homie - Completely hide auto-hidden Windows taskbars
Taskbar Hide - Taskbar, Application Window and System Tray Icon Hider.
Anti Boss Key - Free screen privacy tool, Instantly hide any program when your boss comes around the corner
Zabbix - Track, record, alert and visualize performance and availability of IT resources