The Animation industry uses softwares like Toonboom, animate pro, Adobe Flash. The softwares are simple to learn and use. If the Software provides better or easy workspace and incorporate most of the artistic techniques in the interface, it is of high demand in the industry. Toon boom animate is best example for films, for Internet animation Adobe flash is used.
Some of the initial films in which 2d animation is further modified or ink and paint production stage are:
The Rescuers Down Under, Beauty and the Beast, Aladdin, The Lion King etc.
Big production houses like Disney or Pixar, MGM animation studios etc also have their own animation software’s as well.
Animation using Flash:
Animation using Toom Boom: