i did a quick search but couldn't find any entry about this freeware front-end that organizes and displays all utilities from Nirsoft & SysInternals. while you have to download Nirsoft's programs and save them somewhere, SysInternals tools can be accessed from its Live url
.Windows System Control Center
is portable and works with relative path (see Fig. 2). plus there is a place-holder to all tools by both of the developers so you can find out what you're missing. of course there's a handy "hide missing items" option to show only EXEs on your hard-drive / usb drive.
you can read more about it from this article
in Download Squad.Fig. 1Fig. 2