TweakNow PowerPack 2005 Professional 

TweakNow PowerPack is a fully-integrated suite of utilities that let you fine-tune every aspect of your computer's operating system and Web browser. The RAM Idle program manages the free memory that is available to run Windows programs.
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StormWindow XP 

Cetus StormWindow [TM] for Windows XP will allow the authorized user to add several types and degrees of security to the desktop and system of any shared Windows XP PC.
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