[CentOS] rack configurator?

Hey folks,

Does anyone know of a rack configurator that runs on CentOS?   It does
not have to even be very fancy - immediately I'm just looking for an
easy way to keep track of what is in my racks, and being able to have
a visual of it.   Maybe juggle stuff around.   Bonus if it does power
calculations based on model numbers and so on - or data I punch in for
each model.   But really right now some kind of very specific CAD or
Draw tool that is specific to this purpose.  Or a template for a more
general tool.

thanks,
-Alan

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