Hello,
I have finally finished porting the qcl library to PHP5 and qooxdoo 0.8 and put together an tutorial and a sample application to show some of its features. You can find the tutorial here:
http://qooxdoo.org/contrib/project/qcl/tutorial_applicationand the (updated) sample application here:
http://m53s12.vlinux.de/cboulanger/access/build/The tutorial explains in detail how to use qcl's access control features. It relies heavily also on the QxTransformer toolkit, which is, however, a separate project and can be used independent of qcl.
The tutorial might be a bit dense, but I hope you can get the gist of what qcl can do. More tutorials might follow which explain how to do client-server databinding and how to use the (still buggy) server dialog feature which is part of the demo.
Qcl is not finished yet, but from my own experience, is getting stable enough to be used. I will soon port my application (Bibliograph) to 0.8 based on it, so you can be sure it will be maintained and bug-fixed for some time to come. I also would be thrilled to find collaborators - I have put alot of effort into documenting the source code and keeping it as modular as possible.
Best,
Christian