Lots of talk about Electron apps but as much as I like HTML+CSS for the view, where are the actual heavyweight Electron apps for: digital audio workstations, 3D modeling (is Blender an Electron app? I don't know, I'm asking), the complex brokerage apps (which typically pack and render a lot of information on screen), typesetting apps (like Adobe's InDesign or, on the other extreme, a document preparation system like LaTeX), video editing, GIS-related apps, engines for games (and tools to develop games), etc.

HTML/CSS/JavaScript looks fine for things where there's more style than substance but once we're talking about the desktop apps that engineers (no matter the discipline) are using, suddenly it's not so much HTML+CSS anymore or is it?