CONTEST (CONtrolable TEST matrices) is a random network toolbox for MATLAB (external link) that implements nine models.
The models produce unweighted directed or undirected graphs; that is symmetric or unsymmetric with elements equal to zero or one.
They have one or more parameters that affect features such as sparsity and characteristic pathlength and all can be of arbitrary dimension.
Utility functions are supplied for rewiring, adding extra shortcuts and subsampling, in order to create further classes of networks.
Other utilities convert the adjacency matrices into real-valued coefficient matrices for naturally arising computational tasks.
The toolbox was developed, and is maintained, by Alan Taylor and Professor Des Higham.
Updated May 2008