Clustal is a widely used, multiple sequence alignment program. This
is Clustal Omega, the latest addition to the Clustal family. It
offers a significant increase in scalability over previous versions,
allowing hundreds of thousands of sequences to be aligned in only a
few hours. In addition, the quality of alignments is superior to
previous versions, as measured by a range of popular benchmarks.
Clustal Omega is currently a command line-only tool, and is only
suitable for aligning protein sequences, not DNA or RNA.
This requires argtable.