I'm looking for a hosted tool that I can let someone manage and then I can embed what they create. Ideally there might be a drill down function.
Hi Matt -- Did you come up with a solution for this?
I did not respond because all I have bookmarked along these lines are general drawing tools, along the lines of Gliffy (http://www.gliffy.com/) and Cacoo (https://cacoo.com/). Your need for drilldown is particularly interesting, and I'm wondering if you found something that meets that requirement.