openSUSE:Leap:42.1 openSUSE Leap 42.1 https://download.opensuse.org/distribution/leap/42.1/repo/oss/ qucs Circuit Simulator with Graphical User Interface (Qt) Qucs 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.