logisim-evolution / logisim-evolution

Educational Java application for designing, simulating, and timing-diagramming digital logic circuits, with VHDL and Verilog support.

verilator / verilator

Open-source SystemVerilog/Verilog simulator and lint tool that compiles hardware designs into multithreaded C++ or SystemC.

firemodels / fds

Fortran large-eddy simulation code for modeling smoke and heat transport from fires, plus Smokeview for visualizing its output.

id577 / FS25_AdvancedDamageSystem

A Farming Simulator 25 mod that replaces one-click vehicle repairs with a wear-based reliability and maintenance system.