There are many games made with cocos2d-x. I am sure that there is a good tool for animation (skeletal and other).
I tried spine. This tool looks great but integration with cocos2d-x is very poor. Even an example doesn’t work.
Cocos builder is too simple. It is hard to create complex animation.
I was trying to export flash animation by Super Animation Converter but I have found a bug in this program and realised that there is no point to use a not open software because I can’t fix it.
What tool is used by professional developer ?