Operating system: I use arch, btw.
Shell: fish on Linux and zsh on macOS and eshell emacs.
File manager: I do 99% of my file management with dired inside emacs. For the other 1% I’ll use the default file manager.
Web browser: Firefox, obviously.
Video player: Used to use vlc, now I use mpv like all the cool kids.
Digital Art: Been getting into digital art lately and have been loving krita.
Office suite: LibreOffice. Don’t really use an office suite since I write documents and slideshows in org mode and LaTeX.
PDF viewer: I used to use zathura but now I use pdf-tools inside Emacs.
Image modification: GIMP
If you would like to suggest a program/software for me to try, you can submit the form below.