Here’s another interesting open source project from Krzysztof providing a framework for creating node based visual editors very easily called KZNodes.
With KZNodes you can easily create nodes, attach, and modify those nodes visually, and see the results in real-time. This is great if you would like to create a simple editor for your designer to tweak visual components within an app, or you could even create an editor for users of your apps.
This video demonstration from Krzysztof provides a nice overview of KZNodes and some possible uses:
You can find KZNodes on Github here.