DOS (ms, free or pc dos, whateva)
I am currently posting with a modded android 9 with miui 10.3 shell/gui on top of it... using this amazing nice xiaomi mobile device i got in Taiwan a few months ago.
But u find me mostly on a ubuntu based (debian) workstation, linux duh, with a KDE and GNOME gui (depends on my mood and my tasks).
Always looking for a prompt but i tried ctrl-alt-t here but NO LUCK 😂
i have some mac os and windows install somewhere, i keep it for my mom and the newbs that sometimes also need to get things done (read: giving away their privacy and freedoms).