Based on the software "Toonz", developed by Digital Video S.p.A. in Italy, OpenToonz has been customized by Studio Ghibli, and used for the creation of its works for many years. Dwango has launched the OpenToonz project in cooperation with Digital Video and Studio Ghibli.

From 1957 until around 1964, Hanna-Barbera was an animation company defined by its stable of animal stars: Huckleberry Hound, Yogi Bear, Quickgraw McGraw, Ruff and Reddy, and Top Cat. Each of these characters were of a theme, one that would change drastically by 1967.