PCB CAD tips - PisterLab/scum-dev-board GitHub Wiki
Altium
Altium Designer has a temporary free student license to use the full software program. After that license expires, you can still view your designs with a free perpetual Viewer license.
KiCad
Panelizing
KiCad doesn't really have an automated way to do this, but it can be done.
- https://forum.kicad.info/t/hi-i-am-trying-to-get-my-prototype-from-kicad-panneled-to-work-should-this-go-in-manufacturing-or-layout/22917
- https://hackaday.com/2020/04/25/kicad-panelization-made-easy/
It works to just run PCBNew, then open a .kicad_pcb layout file, then go to File->Append Board..., then align the appended board
Teardrops
Pcbnew 5.1.6 does not have a tool for making teardrops. Fortunately it does support addon plugins. There is one here: https://github.com/NilujePerchut/kicad_scripts/tree/master
Simply copy-paste the teardrops folder into your C:\Program Files\KiCad\share\kicad\scripting\plugins directory on Windows.