S-BITE
S-BITE is an AS level topology generator for the Internet
...Thanks to this layering, S-BITE is able to accurately reproduce Internet topology at the statistical level,matching classical graph metrics, and represent its structure.
S-BITE is mostly implemented in C and depends on the igraph library available at http://igraph.sourceforge.net
In order to speed up the execution of the different components, the package uses shell scripts.