This little PHP script shows a summary, and optionally a full list of folders (directories) on your web server, with their access permissions. Usually most folders will have 755 permissions; you can choose not to list these and other common permissions, so you can concentrate on the "special" ones.
You decide which top-level directory to start at, and how many levels to recurse into. Simply upload the script to your server, and point your browser to it.
This script is also included in the FileWatch download, but simple as it is, we think it's useful enough to warrant its own page.