MAFFT is a multiple sequence alignment program for unix-like operating
systems.  It offers a range of multiple alignment methods, L-INS-i
(accurate; for alignment of <∼200 sequences), FFT-NS-2 (fast; for
alignment of <∼10,000 sequences), etc.

Visit the program website and check /usr/doc/mafft-* for citing and
licensing informations: this program is released under a BSD license
but its extensions use different ones.