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# nauty
[Nauty and Traces](https://pallini.di.uniroma1.it/) are programs for computing
automorphism groups of graphs and digraphs. (At present, Traces does not
accept digraphs.) They can also produce a canonical label. They are written
in a portable subset of C, and run on a considerable number of different
systems.
There is a small suite of programs called gtools included in the package. For
example, geng can generate non-isomorphic graphs very quickly. There are also
generators for bipartite graphs, digraphs, and multigraphs, and programs for
manipulating files of graphs in a compact format.