Circuit Simulation Software Free Download [updated] <2025>

Its "Dynamic Analysis" allows you to change component values while the simulation is running and see the results in real-time.

If you prefer a lightweight, command-line driven approach or want to integrate simulation into your own scripts, Ngspice is the way to go. It is the engine that powers many other free tools (like KiCad and EasyEDA). circuit simulation software free download

Users who want to take a project from a schematic simulation all the way to a physical PCB in one software package. Its "Dynamic Analysis" allows you to change component