I haven't found another similar extension. However, it seems that they are using a very standardized format for the animation in a way that you can use any character using that format. I did a fork of the project in Github and it is not difficult at all. Very easy anyone can create a language variation with different characters.
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I haven't found another similar extension. However, it seems that they are using a very standardized format for the animation in a way that you can use any character using that format. I did a fork of the project in Github and it is not difficult at all. Very easy anyone can create a language variation with different characters.