Qucs stands for Quite Universal Circuit Simulator. It is an integrated circuit simulator which means you are able to setup a circuit with a GUI and simulate the large-signal, small-signal and noise behaviour of the circuit. After that simulation has finished you can view the simulation results on a presentation page or window.

Install and appropriate package-

qucs-0.0.17.pet packaged by 666philb

qucs-0.0.16-i486.pet packaged by WN2A

QUCS homepage

Qucs RF/Microwave/Digital Design thread

QUCS on Puppy Linux (WN2A)