ModelSim vs QUCS

ModelSim

Development

ModelSim is a digital circuit simulator used for simulating and debugging HDL designs like VHDL, Verilog, and SystemVerilog. It enables functional and timing simulations of RTL designs before synthesis to verify functionality.

QUCS

Development

QUCS (Quite Universal Circuit Simulator) is an open-source electronics circuit simulator software. It allows you to set up electronic circuits and simulate them. Features include DC, AC, S-parameter, harmonic balance analysis, etc. It has a GUI for schematic capture and simulation control.