AlphaMALIG (ALPHAbet Multiple ALIGnment) is a tool which allows you to align many but no more than 200 sequences. These sequences will be formed by characters of a finite alphabet.
Alphabet takes a database of aligned protein sequences in BLOCKS+ format and examines the alignments column-wise looking for groups of amino acids that co-occur in columns more frequently than expected based on overall amino acid composition. These groups of amino acids can form a reduced alphabet for building sequence motifs (eMOTIFs) or for detecting correlations between columns of amino acids (MCSeq).