Agna allows 3 key types of social network analysis (explained in detail in an excellent 8-page introductory PDF paper by Marius Benta downloadable from the Agna website):
Centrality
Centrality as an actor-level coefficient reflects the degree of access to information (or resources) of an actor and hence the probability of that actor to acquire a leadership position in the group. As a network-level coefficient, centrality measures the distribution of information (or power) within the group.