http://bofh.be/clusterknoppix/ seems nice. Don't know if it does all you want, though.

All I can see software like this doing is improving the "networking" of the current lower skilled workers and allowing the incompetant managers to remain in thier positions.

A skilled manager recognises which of his staff interact with other departments well, he may try to encourage them to interact with another department or manager, he doesn't need software to tell him such things.

What if Joe in IT's best mate is Bill from marketing, as such they form a good link between the departments, but Joe doesn't interact with accounting as he thinks John lazy and stupid. A skilled manager will pick up on something like this, software and a poor manager may try and persued Joe to network with John to the detriment of the department.