Nauty (no automorphisms, yes?) is a set of procedures for computing automorphism groups of graphs and digraphs. this mathematical software suite is developed by brendan mckay and adolfo piperno: http://pallini.di.uniroma1.it

nauty computes graph information in the form of a set of generators, the size of the group, and the orbits of the group; it can also produce a canonical label. the nauty suite is written in c and comes with a command-line interface, a collection of command-line tools, and an application programming interface (api).

this package contains the header files, static libraries and symbolic links that developers using the nauty api will need.