Mothur’s latest two versions (1.8 and 1.9) have now been set-up on The University of Georgia’s Research Computing Center. See their website at http://rcc.uga.edu/software/app/mothur/. I am not sure but academicians outside of UGA may also be able to use these resources at a nominal fee.
That’s great, I’m glad to hear you’ve set up this resource for everyone at UGA.