Here are the programs used to make Alpha's World.
https://sheeptester.github.io/scratch-gui/
E羊icques is an expansion of Scratch that lets you change the aspect ratio, but 16:9 was mainly used for the show.
Panzoid is an online 3D animation software that's easy. The show uses Clipmaker 2 and is mainly used for short animations around Planet Fandom.
A tutorial is coming soon for Alpha's World animations, to make your very own Alpha's World episodes.