seems like alotta postings either fall into the 1 man category or the 'almost mainstream' category, (GoLite, Montbell).
its a hard question to answer. western mountaineering can be found at many stores like Summit Hut in Tucson, and they have gear made in 2 countries... so, are they applicable?
OES maccat tarps are definately a one-man operation. not to be included?
lets see here. id chose these:
Mountain Laurel Designs
Frost of Sweed'n
honorable mention goes to stickpic