Logic Paint: A transistor-level logic simulator
github.com
github.com
Install the Logic Paint VSCode extension
WTF. No. I'm not going to get another piece of enormous unwanted software for this. It can definitely be a standalone application, maybe even a single executable. https://github.com/gdevic/Z80Explorer (previously discussed at https://news.ycombinator.com/item?id=23896816 ) is an example of how to make your software a little more accessible. It's easy to download, extract, and run.
Would love to see a video of the results...