Spin compares pairs of sequences in many ways, often presenting its results graphically. It has very rapid dot matrix analysis, global and local alignment, plus a sliding sequence window linked to the graphical plots.

Spin can compare nucleic acid against nucleic acid, protein against protein, and protein against nucleic acid. It can analyse nucleotide sequences to find genes, restriction sites, motifs, etc, as well as performing translations, finding open reading frames, counting codons, etc.

See also information about pregap4, gap4 and trev.