If you are interested in 2D animation software there are a few others that are worth mentioning.
These packages are usually either vector based or raster based.
Of the vector based I recall:
- Anime Studio
- Toon Boom Studio/Harmony/Animate
- Macromedia/Adobe Flash/Animate
- Synfig Studio (Open Source)
Of the raster based:
- Celsys Retas
- Toonz Harlequin/Bravo
- TVPaint Animation
There are some others in both categories but I don't remember them right now. Feel free to add to the list.
Of the vector based I recall:
- Anime Studio
- Toon Boom Studio/Harmony/Animate
- Macromedia/Adobe Flash/Animate
- Synfig Studio (Open Source)
Of the raster based:
- Celsys Retas
- Toonz Harlequin/Bravo
- TVPaint Animation
There are some others in both categories but I don't remember them right now. Feel free to add to the list.