QSPICE

QSPICE is a SPICE-based circuit simulator developed by Qorvo, focused on simulation speed, accuracy and reliability. It handles circuits with a lot of digital logic thanks to built-in C++ and Verilog compilers, allows fast modelling of MOSFETs, diodes and JFETs, and produces publication-quality plots. Electronics engineers use it to simulate switch-mode power supplies, analogue circuits and control loops. Limitation: it runs on 64-bit Windows only.