Some monks here use it? it is stable and secure?
I've never heard of it or used it :) Same goes for these things and
App::Office::CMS - A Canny, Microlight and Simple CMS
If you know anything about the authors or the frameworks, read the reviews (even self-reviews in docs), take a look at bug cue (open/resolved/rejected), you can guess at the stability/security :)
now dhoss* and ron.savage* do know they way around code , but their stuff isn't super popular, so I would use it and it should be reasonably secure