Not a lot of tech I use. Honestly for a person growing up with computers, I am a pretty techless person.
Some stuff I change sometimes, like my distro or desktop environment/window manager.
Desktop: Just a refurbished ThinkCentre 92p
E-book reader: Pocketbook Touch Lux 4 (new)
Mobile: Samsung S5610 - my trusty phone of 7 years, you can throw it, but it will not break. Screen is still clean.
Linux distro: Artix Linux (runit version) - I have been using only Linux for the past 14 years.
Window manager: Dwm, a tiling window manager which I really like and patch it myself. I don't use any desktop environment.
Terminal emulator: kitty (experimenting), otherwise st
Web browser: Brave browser. Check out my extension list.
Password manager: KeePassXC - never use your browsers password manager.
Launcher, wallpaper setter: dmenu, chwall script with feh
Text editor and other stuff: Emacs
Bookmark manager: buku or org-capture mode in Emacs
RSS reader: Elfeed with Emacs
Video player: mpv
Download videos or mp3 from youtube: Youtube-dl - you can use it too view videos directly, with mpv
File manager: mostly ranger, Thunar if GUI
Music player: ncmpcpp and mpd, or Qmmp with original WinAmp skin
Gaming stuff: Steam (Proton too), Lutris, Dosbox, plus Wine staging with separated prefixes
Screen color temperature: sct
Graphic editing: Inkscape and GIMP
Image viewer: sxiv
Bittorrent: Transmission, because I can't make rtorrent work.