🖼️Image Editing
GIMP
Gimp (GNU image manipulation program) is a great open-source software for making and manipulating images
If you're a photoshop refugee like I am, consider using this photoshop-like UI plugin, it's the only reason I can get anything done in GIMP
Download
https://www.gimp.org/downloads/
Aseprite
Used more for pixel art, though I will use it on occasion for regular image manipulation