= ngspice =
 * http://ngspice.sourceforge.net/
 * http://eee.guc.edu.eg/Courses/Electronics/ELCT503%20Semiconductors/Lab/spicehowto.pdf
 * http://ngspice.sourceforge.net/ngspice-tutorial.html

ngspice is the open source spice simulator for electric and electronic circuits.

== Debian install ==
 * sudo apt install ngspice