Animation Paper is a software that's aimed at those who animators and artists who create 2D animations. However it's still in development. Animator and director, Niels Krogh Mortensen, has launched a crowdfunding campaign to raise funds to finish this software. Watch him explain in the video below.

You can back the project and read more details at:
https://www.indiegogo.com/projects/animators-new-favorite-software-anima...