I need to create an interactive, collaborative chart containing all the pages of a website showing how they are connected. Viewers of the chart should be able to assign developers and testers to each page, and also change and display the status of development and testing of each page.

What tool can I use that allows for all of the features described above? The best tool would be free and easy to use.

Whoa pal, you are way over my head here. Don't you have any easy questions? Like... where do gophers go when that are molting?