I belong to a small support group for a small lathe and mill made by Prazi ( East Germany). Just FYI, such support from Yahoo is about to end: https://help.yahoo.com/kb/groups/SLN31010.html
No one may notice.
No one may notice.
LTSpice is on Groups.io...Sorry John. First that came to my mind: LTSpice, that served me so many times.
Have to find out.
Three years going on there... wow.LTSpice is on Groups.io...
https://groups.io/search?q=LTSpice+