my dad sends me pics of his car radio all the time when he's listening to metal and he recognizes bands and today he sent me a pic of the Faceless cover of Depeche Mode's "Shake the Disease" and i was like :D

really good cover btw https://www.youtube.com/watch?v=tLZN31HO0dA

Myself I use Libre office programs and programs that make my creative projects possible like Blender and the Godot Engine. I'm sure there are a lot more that I use and take for granted though, a lot of little but important pieces of free software.