The Linux PCI ID Repository(http://pciids.sf.net/) is the home of the pci.ids file. It's a public repository of all known ID's used in PCI devices, that is ID's of vendors, devices, subsystems and device classes. These ID lists (usually in form of a pci.ids file) are used in various programs ( The Linux Kernel(http://linux.kernel.org/), The PCI Utilities(http://atrey.karlin.mff.cuni.cz/~mj/pciutils.html) etc.) to display full device names instead of the numeric ID's.

The PCI Vendor and Device Lists(http://www.pcidatabase.com/) are not dedicated to UniX, but contain huge device lists in different orders, header files, example source code and more.