Dell’s DRAC5 is based on free software. The source has been rumored to be available but hard to find – until today, when this helpful e-mail popped up on the linux-poweredge list.
Here’s the link to an ISO with the DRAC5 source:
http://opensource.dell.com/releases/drac5/1.60/
(link updated 2012/12/09, thanks sync0x!)
The path has changed:
http://opensource.dell.com/releases/drac5/1.60/ (372MB)
http://opensource.dell.com/releases/drac5/1.60/rac5160.iso