I want to list those that are strictly tenkeyless, meaning that the only difference from a regular keyboard is that the numeric keypad is lopped off. The Noppoo doesn't qualify, as many others...
Oh, okay. That's a noble endeavor, and certainly more possible, there's too many "mini" layouts out there.
Still, what's the dividing line? Are you counting ISO/ANSI only? What about creative placements of the |\ key? I'd say count them all, unless they are missing function-keys or deviate from the "standards" more than that.
Here's the ones I'd count that have been mentioned in this topic so far:
filco majestouch tenkeyless
leopold tenkeyless
cmstorm quick fire rapid
realforce (86UB and 87UB I think?)
ducky 1087 (others?)
PLU-ML 87