[matthewn]

I would say that HTML/Javascript is not a "tool" in the same sense that HyperCard was.

HyperCard's real strength was that it allowed mere users (not programmers) to create their own apps (or "stacks", in the HyperCard parlance) through pointing and clicking, plus an English-like scripting language (HyperTalk).

We have largely abandoned the idea that users should be able to create their own apps, so there is no popular, modern analogue to HyperCard, though some people keep trying. For instance, LiveCode is a commercial product that is directly inspired by HyperCard. And CardStock is an open source HyperCard clone that swaps out something English-like for Python as the underlying scripting language.

https://livecode.com/

https://github.com/benjie-git/CardStock