clustalw - 2.1+lgpl-7 main

This program performs an alignment of multiple nucleotide or amino acid
sequences. It recognizes the format of input sequences and whether the
sequences are nucleic acid (DNA/RNA) or amino acid (proteins). The output
format may be selected from in various formats for multiple alignments such as
Phylip or FASTA. Clustal W is very well accepted.
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The output of Clustal W can be edited manually but preferably with an
alignment editor like SeaView or within its companion Clustal X. When building
a model from your alignment, this can be applied for improved database
searches. The Debian package hmmer creates such in form of an HMM.