Well you don't seem to be doing much work in finding your results. Seriously. Think of bike brand, anyone, go to their website, chances are, if they make road bikes (even if not), they'll make a singlespeed/Track Bike. Beyond that, it's a pretty fair chance that it's going to be made of Aluminium if Track/SS is not their main theme.

This is not research. This is you (being lazy and) asking us what frames are out there, when you could look this information up very easily. I don't mean to come off as a pretentious ******, but come on now. Do some research yourself, actually look this stuff up, and you'll probably find extremely underrated frames that no one talks about.

EDIT:

Perhaps this is me just being a prick, and I apologize for that.

If you haven't thought of it, Gary Fischer also makes a Aluminium Fixed.