RebootEx 

RebootEx is a system utility for Windows NT/2000/XP operating systems that allows to automatically shutdown, shutdown at a specific time, power off, reboot and/or relogon to your computer.
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Absurd Terminator 

Fast Windows Shutdowner and Task Terminator. Shutdown Windows and terminate active tasks by one touch (alternative to "Ctrl-Alt-Del") and from command line
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TK ChildLock! 

With ChildLock! you can limit an user's log on or log off times. Define when users can log on to your PC. If a specified user is already logged on your system on a non-logon-time, it is possible to log him off automatically.
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Aye Shutdown 

Automatically execute various programs at predefined time and control access to and amount of time spent on a PC.
down luncher

Aye Time Switch Pro 

Aye Time Switch Pro is a very powerful launch & shutdown tool which enable users to control computer more freely at specified times.
down luncher