Autocad. This is the main (only?) reason I continue to use Windows. Professional 2d cad for architectural drafting has been lacking in Linux for a long time. There are a few commercial alternatives, Bricscad being the big one, but due to (cheap) grandfathered licensing cost for Autocad, I"ve been unable to push for a purchase. Qcad (professional) was another option I looked at but, despite being a good program at an amazing cost, had enough differences in work flow that I couldn’t find a good way to integrate it into a shared workflow.

Every once in a while I switch to Linux and either run a W10 vm or RDP just to work around the issue but, inevitably, get frustrated with performance. Freecad and Blender both seem to be working on the problem -but- from a BIM perspective, not detailed drafting . . .

I’d add:

• ghostscript - with some basic perl scripts, works great for pdf flattening/compressing, merging, splitting, adding bookmarks etc.
• poppler - pdfseparate, sometimes pdfunite
• zathura - pdf viewing
• feh - images
• sshfs - prefer it to rclone
• cheat
• emacs - org-mode, latex, dired/wdired, capture, eshell, vterm, tramp
• mc/midnight commander