My preference is to use open source software and avoid free software whose code is not available and proprietary software.

Here is the brief list of the softwares I use:

Browser

I use Firefox with Strict privacy rule and also use Brave

RSS

NewsBoat

Terminal

I currently use Ghostty with ZSH as shell

Programming and text editing

Neovim

PDF

Evince

Notes

For notes, I use latex, markdown and word document using LibreOffice

Image modification

Gimp