The 2D Animation Software used by Studio Ghibli & Hayao Miyazaki is now Free to download. Its been made open source. Which is awesome, right? Though softwares can be cool but with Miyazaki's films, Its the skill & his art that we love so much.
Nonetheless, Be sure to download and try this cool software that enabled such awesome films. I have also pasted a basic tutorial link below the download link.