is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (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.
Qucs, briefly for Quite Universal Circuit Simulator, is a circuit simulator with graphical user interface (GUI). The GUI is based on Qt® by Trolltech®. The software aims to support all kinds of circuit simulation types, e.g. DC, AC, S-parameter, Harmonic Balance analysis, noise analysis, etc.
Qucsator, the simulation
Version 0.0.15: The new release comes with new translations into Arabic and Czech, model libraries for PMOSFETs, NMOSFETs, regulators, varistors and ideal components, and many new primitive components such as EPFL-EKV NMOS/PMOS V2.6, rectangular waveguide, HICUM L0 v1.2, HICUM L2 v3.23, photodiode, digital buffer, microstrip radial stub, phototransistor, RLCG transmission line and numerous new digitalMore...
Mac OS X 10.3 or later, an installation of Trolltech's Qt/Mac 3..53 C++ Frame work; a download bookmark for an installer apckage of Qt/Mac 3.3.4 (QPL/GPL edition) is provided with the installer. While the program runs natively under MacOSX some libraries from Apple's X11 distribution are required.