https://www.tinkercad.com/ (Web)
http://www.virtualbreadboard.com/ (Windows)
MC is a modern simulator, and professional level. I assume the guy is retiring. You are not going to be simulating large ICs, but it’s still plenty good for other stuff.
https://www.tinkercad.com/ (Web)
http://www.virtualbreadboard.com/ (Windows)