Startup Monitor is a free and small utility that notifies you when any program registers itself to run at system startup. You can use it to prevent annoying programs from registering themselves behind your back.
Tagged: startup folders
Starter is a free and powerful startup manager for Windows; it will let you view and manage all the programs...
Autoruns is a free utility that will show you what programs are configured to run during system bootup or login, and what extensions load into various Windows processes, including Explorer and Internet Explorer.