Rack design tools

With the move to the server room coming up in a couple months, I've been spending some time trying to lay out the racks we'll have there. My current layout is in an OpenOffice spreadsheet; I thought I'd try some other tools and see how they shape up.

• APC Configurator - Windows only. I did try this a while ago and found it wasn't bad, but no power calculations — one of the reasons I went to a spreadsheet in the first place.
• AusrackID - flash based, so works on a Firefox on Linux. Very nice, but a limited number of hardware choices — so there are Apple Xserves but no Thumpers. There's no way to add hardware and no real generic choices ("4U server", "12-disk 8U array", etc). Also no power calculations.
• RackTables - GPL'd LAMP app, so dead easy to install. Not bad at all, but it's an early version (0.16.6) so the interface is a bit clumsy interface and there are lots of features planned RSN. Aims to be a cross between a server room planner and an asset tracker, so that might not fit in with my planned use of GLPI. No power caculations, though there is a request to add SNMP monitoring of APC PDUs.

Still sticking with a spreadsheet for now; it's not the best, but it is flexible and quick. Any other tools I missed?