Cartoon animation software?

No its not a specifically cartoon animation software.

I recommend Toon Boom. Check its benifets.

Adobe Flash CS is exploited to draw a flat graphic but by technical and ways of thinking in order to produce files can be modified quickly and safely without damaging the file or complexityBut Anime Studio is more options for drawing dimensions and imports images with high digital accuracy and contains types of pencils and feathersIt also contains filtersEach program has an advantage

if we wanna do traditional animation then adobe animate CC (former flash), and toom boom is also great for doing amazing 2d animation, also there is anime studio for 2d animation as well .and for some flat 2d animation, adobe after effect is great

Corel Painter is a great software for this. You can get it here http://www.corel.com/en/pages/coupons/ and some discounts as well. ;)

I think (Cinema4D) from MAXON company is the best for this kind of design.

Urmmm, Since,3D animation medium as taken over large part of character animation...I know some animators still use programs like 'Digicel FlipBook' pencil application on Windows. Ideally, to Block out key poses for action before spending time in3d app. Time saver!

This app is commonly used by industry pro - Jason Ryan (Supervisor Animator) on Kung Fu Panda film.

Or You could use Flash...? 

Aftereffects, Adobe animate, 

you can use blender to Design and Animate your models