Don't Sleep is a small portable program that prevents system shutdown,
Standby, Hibernate, Turn Off and Restart.

Easily schedule and execute the shutdown, restart, etc. of Windows at a preset time

PShutDown is a small, very easy to use application specially designed to help you schedule various actions.

Tiny system shutdown scheduler.

Shutdown your PC automatically or remotely from any computer or mobile phone

Ampare Shutdown Manager - simple little computer shutdown/restart/logoff scheduler and manager

AbortShutdown allows you to abort a remote shutdown made against your local machine, provided you have sufficient privileges.

SDClock will power down Windows at an appointed time.

Shut down or restart your computer without having to go to the Start menu

Instant Shutdown is a C++ program that instantly powers off your computer when run, as if it were unplugged

Free PC shutdown timer, that comes as a stand-alone tool or included in Smart Turn Off

Gets you faster access to the Turn Off Computer menu of Windows Xp

This software shuts your computer down at a specified time and date

Shut down, restart, and hibernate your PC at a selected time

Powerful free program to shutdown, reboot, sleep or hibernate your computer at the time you like