Circuit Simulator

Circuit Simulator is a simulator for electronic circuits. I always preferred rather than spice, because is more didactic and it works in real-time. It has a long story: before there was the applet java version, after an HTML5 porting has been made, renaming it "CircuitJS". You can use it directly from the Falstad's web site (the original author), without the need to download it (an offline version is available too).

Click here to open CircuitJS