Mothur is a comprehensive suite of tools for microbial ecology community. It is initiated by Dr. Patrick Schloss and his software development team in the Department of Microbiology and Immunology at The University of Michigan. For more information, see Mothur-Wiki.
The get.otulist command parses a list file and creates an .otu file for each distance containing 2 columns. The first column is the OTU number the second column is a list of sequences in that OTU.
v.1.20.0: Updated to Mothur 1.33