I mean admin panel. Some document browsing system of Joomla kind.I miss that too! I have a site with 500 pages, but already I really feel the need to be able to browse documents and other recourses in about the same way as in Mambo/Joomla. Not to replace current system, but to use as an alternate way of browsing recourses.

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Don’t forget also that having logged into Manager you can switch over to the actual site, navigate there and then use QuickEdit to perform many functions on the "frontend".
After using the betas for a week or two, I use the categories extensively. It’s hard to imagine going back to everything just being in one big jumble! Now if things could be in more than one category... like "sidebar" and "user management" for the chunk for the weblogin form!
You’ll likely be waiting quite a while. We have at least one planned release slated before 1.0. I find MODx much more capable in it’s pre-1.0 state than most others. That doesn’t mean that MODx is the right answer to all website problems though.
Finally, I decided to wait for a final release of 1.0.
Hope that all problems will be fixed!
I feel that your cms is already very good and has extremely high potential.