Open Source Tools for Creators

"GIMP is a free and open-source raster graphics editor used for image retouching and editing, free-form drawing, converting between different image formats, and more specialized tasks."

Blender is being actively developed by hundreds of people from all around the world. These include animators, artists, VFX experts, hobbyists, scientists, and much more. All of them are united by an interest to further a completely free and open source 3D creation pipeline.

"At Autodesk Sketchbook: quick conceptual sketches to fully finished artwork, sketching is at the heart of the creative process.... access to fast and powerful creative sketching tools is an invaluable part of any creative process.

"The Free and Open Productivity Suite"  Apache OpenOffice is an open-source office productivity software suite.