Ilograph fulfills 2 out of 3: diagrams are broken up into a model (resources) and perspectives (their relations). The layout is always automatic, though. As a p

Ilograph fulfills 2 out of 3: diagrams are broken up into a model (resources) and perspectives (their relations). The layout is always automatic, though. As a plus, though, this allows them to be interactive and dynamic. Disclosure: I'm the dev