Texas A&M also has One Army... While technically a "men's service organization" they were pretty much a fraternity when I was in school. They didn't have a house or anything, but they participated in everything that the greeks did. They did sorority philanthropy stuff and had social events and mixers. They also had a recruitment process that was fairly similar to fraternity rush. A very nice group of guys.
There was also Ol'Ags and one other (sort of anti-greek but still fraternity-like) group that I can't remember the name of right now. All of them were only on our campus.
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