Thanks. I’ll help any way I can, I’ve tested a lot of intranets and settled on Mango for our company.
Mango allows you to have unlimited guest users with unlimited groups and projects. Problem is, once inside a group, there is no further refinement of sections. So if there was a group for “PHP”, there is no further grouping for Drafts, Final Edits, and Ready to Publish, etc.
On the flip side, the file system lets you “upload new version” of files, keeping track of all revisions. And group chat, discussion, posts, wikis, even calendar, are a click away.
I don’t think Wordpress is up to the task of managing all this either. It puts a lot of extra workload on the server to run the front-end and backend intranet at the same time.