LiGNUx, VLC, Firefox w/Ublock, KDE Connect, Dolphin, Kate, KDE. Vim, i3wm, Keepasses, yt-dlp, deluge, freecad, librecad, slic3r/cura. Some of these are clearly redundant or overlap. My use cases vary

Non-foss: Steam library.

I wouldn't spend so much time on the PC if I had to pay a premium for every little thing much like I've experienced with my arts-related hobbies.