Mothur
From Montana Tech High Performance Computing
Mothur is an opensource, expandable bioinformatics software for the microbial ecology community.
There are two versions of mothur installed. One is the MPI-enabled version and a non-MPI version. If you just need to use a single compute node, you will want to use the non-MPI version; for multi-node parallelization, you will want to use the MPI version. Using the MPI version for a single node multi-threading parallelization will result in slower performance [1].