What OF Gui addon may use to do an app like this?

What OF Gui addon may use to do an app with a gui like this? The Screenshot is taken by NeoTextureEdit :http://neotextureedit.sourceforge.net/usage.html I would make a little editor similar to this that can save in xml file. I looked at Kyle ofxControlPanel addon and at Patricio ofxComposer for the idea of connecting boxes; but maybe there are possibilites or addons that let’s to do in an esier way this.

Thanks