Studio Ghibbli made the films Spirited Away and My neighbour Totoro using this, their own self designed animation software which is now free to download.
https://opentoonz.github.io/e/index.html
Hope it's useful to anyone that wants to animate![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
https://opentoonz.github.io/e/index.html
Hope it's useful to anyone that wants to animate