Comment by chrismorgan

It might not be particularly visible from outside just yet, but we’ve reached the stage where a lot of the fundamentals (which are typically deplorable in quick-and-dirty libraries) really are being nailed down quite nicely; and, perhaps more importantly, where a lot of the different teams are sharing work and collaborating on libraries, rather than each project starting from scratch. The momentum around AccessKit is the most visible example of this.

The Linebender community is a very promising venue for such collaboration, and there are at least four organisations investing quite a bit into this and related endeavours.

I won’t name any specific two libraries. It also depends a little on whether you’re targeting web tech only, or web and desktop, or desktop. (Or mobile.)