Creately is a visual collaboration platform used by project teams to communicate more effectively. With Creately's easy to use interface and Shared Projects, everyone on your design, development and business teams can collaborate on software designs, wireframes, business & strategy diagrams easily.
Great resources for students: charts and maps the writers drew as they planned books or lessons
Auden's chart on Romanticism, Nabokov on Ulysses
Faulkner's Yoknapatawpha County, Vonnegut onthe shape of the story, etc. Just wow