Comments on Bob Dance F2U animated base All Comments Start of Thread Parent

You can use https://ezgif.com/maker to put all frames in order, have 'don't stack frames' enabled at the bottom, set delay time to preferred speed and you can mess with the gif rates too
As for program, you can use any animation/drawing program that allows onion mode (I use FireAlpaca) if you use that too you can extract all frames (which are all the layers) with animation mode and set background as transparent 

tysm !