It really depends on what you're missing from ExtJS. Yes, there are some frameworks oriented towards more desktop-like UI components. Some of them even do layout, maybe even non-view stuff (Kendo seems to do at least the former).

But there are other degrees of ExtJS nostalgia:

- Being allowed to do everything in a desktop-like manner, and not having to bother too much with either mobile or more stylized web applications, even in enterprise contexts. No technical issue, no technical solution.

- Doing that in a simple manner. Even contemporary (> v4 or even v3) ExtJS might not be "ExtJS" in this regard, as the framework part got a lot more complex. First with their own weird tooling, nowadays with the worst of both worlds.

- Not having to touch HTML and CSS. Early ExtJS allowed you to do most things with heavily nested JS literal objects. With angular/react/etc. it's all separate syntaxes, most of them with angle brackets.