The QControl Toolkit by Q Software Innovations is an object-oriented and extensible alternative to XControls. Use the QControl Toolkit framework and the QControl Creation Wizard to create QControl Classes and receive the benefits of XControls without the headaches. Take advantage of easy UI logic code reuse. Encapsulate and decouple the UI logic away from the business logic of the main application and from the UI skin. Use wherever the VI Server and LabVIEW object-oriented programming are allowed. Easily extend the capabilities of current LabVIEW controls through access to all properties available at run time. And easily use the toolkit with more complex frameworks like the Actor Framework or other plugin architectures where LabVIEW libraries and packed project libraries are used and where XControls can behave unpredictably.
Check it out now on the NI Tools Network here.
I also started a thread on the NI Community: UI Interest Group page, here.