I've started an integration of SpriterPlusPlus into Cocos2d-X, a new library called Spriter2dX. It does not yet have much platform support (only tested with CMake for Linux) but I will be adding that as I finish integrating this into the game I am developing. I expect to have Android done very soon, other platforms may follow and of course I'll take pull requests for them.
I found this pretty easy to do, I think SpriterPlusPlus has a pretty good design for extension points. Cocos2d-X has a very different rendering system than for example SFML - so the ImageFile override had to work considerably differently. In Cocos2dX we don't just render a sprite to the screen, instead each object on the screen has a persistent object in a scene graph which will get rendered in a batch. So to work in the SpriterPlusPlus model I have each CCImageFile manage a pool of cocos2d::Sprite objects that it will position for a single tick. I have an example where I ported shamelessly robbed SpriterPlusPlus's example and its able to run 100 Grey Guy animations at about 50 fps on my laptop, haven't tried it with a real GPU.