2D Art:
Clip Studio Paint
Aseprite
Magma.com

3D Art:
Crocotile3D
picoCAD2

Video Editing:
DaVinci Resolve
Premiere Pro
After Effects

Game Dev:
Construct 2/3
GBStudio
RPG IN A BOX

CSP Brushes:
Ciro
Chunky Triangle
Easy Line