There are too many carabiners for anyone to assemble a comprehensive collection, so I don't try. My modest set includes a few interesting designs (this gallery excludes specialty carabiners):
AMF (American Machine and Foundry)
Black Diamond - Nonlocking Ovals
CAMP (Concezione Articoli Montagna Premana) - Nonlocking
CAMP (Concezione Articoli Montagna Premana) - Locking
CMC Rescue (orig, California Mountain Co.)
DMM (orig. [Denis] Morehouse Eng.) - Nonlocking
DMM (orig. [Denis] Morehouse Eng.) - Standard Locking
DMM (orig. [Denis] Morehouse Eng.) - Autolocking
Leningrad Experimental Shipyard of the VTsSPS
MSR (Mountain Safety Research)
NRS (Northwest River Supplies)
Petzl Locking Ovals, HMS, etc.
PMI (Pidgeon Mountain Industties)
REI (Recreational Equipment Inc.) - Ovals
REI (Recreational Equipment Inc.) - Ds and Locking Ds
SMC (Seattle Manufacturing Corp.)- Nonlocking
SMC (Seattle Manufacturing Corp.) - Locking
= Under construction;