Open Source creative software

Digital Painting Software

Krita 

Gimp

Special Effect particle generator

Particle Illusion

 3D sculpting/painting

Zbrush Core
Armor Paint

 3D/2D modeling and animation

Blender 3D

2D animation

Opentoonz

Storyboarding

Storyboarder

 Game Development

Godotengine
Lumberyard

Illustration

Inkscape

 Video Editing/streaming

Hitfilm-express

Davinciresolve

Obsproject

Openshot

CAD

Openscad

Web video conferencing

Jitsi-meet