Coriander is the GUI for IIDC cameras under Linux.
A list of cameras which indicates, among others, which camera is IIDC compatible and therefor can be used with libdc1394 and coriander.
linux1394.org, where you will find libraw1394, the kernel modules and other 'low level' stuff.
The 1394 Trade Associtation which edits the IIDC specifications. Note that you can't download the specs on their website. However, I have permission from the IIDC Committee to provide the IIDC/DCAM specs. Enjoy!
There is a nice bunch of tutorials and other informations about cameras, optics, etc... on the 1394 Imaging website.