The Grease Pencil provides 2d animation tools within Blender's free and open-source full-3d pipeline.

Pencil2D is a free and open-source animation tool, which makes it ideal for all types of users, especially creatives who want to create basic animations without the overhead of software costs.

Pencil is a very realistic sketching program and good 2D animation tool for the cost (free).

Animation software maker Blender is showing off its upcoming Grease Pencil 2.0 tools through a new demo called Hero. The Grease Pencil provides 2d animation tools within Blender’s free and open ...