The Grease Pencil provides 2d animation tools within Blender’s free and open-source full-3d pipeline. For a clearer idea of what this means, take a look at the end credits of Hero which shows in ...

Tools to create 2D animation within Blender 3D :) This project's goal is to provide tools for use in traditional 2D animation. ##"Lightbox Animation Layer" This add-on creates transparent "layers" ...

It's relatively accessible compared to 3D animation (see below) and it allows a lot of flexibility since almost any style of art can be used. There are various 2D animation techniques.