well I have been working really hard on librbo, and yesterday I completed the alpha version. Basically it works from end to end and can do everything that you can do in asp and jsp.
some of the features include
So basically the feature set is more or less complete and I am starting to work on the php binding so that I can reproduce all the functionality that is currently in asp or jsp.
At this stage it is still very alpha, I wouldn't want to push it too hard, but once I have the binding for php working I will go back and see if I can improve some of the areas in librbo and make it alot more bullet proof.
If there is anyone interested in thisjust email me, and I will see what I can do.