SocNetV (Social Networks Visualiser) is a flexible and user-friendly tool for Social Networks Analysis and Visualisation. It lets you create new networks (mathmatical graphs) with a few clicks on a virtual canvas or load networks of various formats (GraphViz, GraphML, Adjacency, Pajek, etc) and modify them to suit your needs.

The application can compute network properties, such as density, diameter and distances, as well as node and network centralities. Various layout algorithms (i.e. Spring-embedder, circular and in levels according to centralities) are supported for meaningful visualisations of your networks. Furthermore, simple random networks (lattice, same degree, etc) can be created.

Website:
https://socnetv.org