Another thing there is a mentioning of Prado framework.
Glance overview shows that it is more PHP then Qooxdoo library as an example. It might be not as complex as Q library but would be worth to look at. Prado is Open Source project but have no IDE to work with. Since integration into DfPHP is not that complex, who knows we might see some partnership in the future… if Prado team will consider that.
Will be interesting to see it