I actually love using Falstad, it's fairly simple which is great because usually I just want to look at the ideal behavior of things to get the circuit working

I actually love using Falstad, it's fairly simple which is great because usually I just want to look at the ideal behavior of things to get the circuit working before I worry about the exact characteristics of every part. This link will take you to that crosspoint switch demo. https://tinyurl.com/yr34sym6 https://tinyurl.com/yr34sym6 https://wokwi.com/ https://wokwi.com/ is great for simple, digital only stuff. https://fritzing.org/ https://fritzing.org/ will kind of lay out the PCB for you, but it's kind of a pain in the ass. Wokwi and Fritzing are more "Breadboard Simulators" than real circuit simulators, but they do have their place.