Is there a way, either with the standard Alfresco set up or user generated extensions, to out put a list of the total users, what groups they belong to, what files and folders those groups have been attached to and their permission level?
I've just been asked to take over our Alfresco system and the permissions are a mess, and there are just enough documents and folders on the system already to make tracking a nightmare.
The JavaScript/FreeMarker APIs support most of this - so you could write a WebScript or Template to display this data. You can expand groups, get user details and walk permissions using javascript/freemarker.