I would like to check several properties of the graph behind a website I own. The properties I'm interested in are: diameter, shortest path from index page, min/max/average degree of vertices, and other properties that do not require solving a NP-complete problem. I'm also interested in tags that are not links, in order to check the programming style. This is a Wordpress site, but I would like something generic. I've tried Gephi, but the UI is not very good and I didn't find plugins to import or generate that kind of data. It should run under Linux or Mac OS X; I'm not looking for an online application.