Ask HN: Is GWT/Google Web Toolkit still being used today?

Technically, yes - looking at the GWT Google Group, there's evidence of people still using it. I'd assume it's mostly in internal/enterprise scenarios.

As far as public mindshare, though, it's dead. It's Java, it compiles slowly, the old DevMode plugin stopped working as of FF27, and the Javascript ecosystem has advanced far beyond what GWT could do in terms of developer experience and sharing code across client+server.

Also, the discussion of "GWT 3.0" and the J2CL compiler seemed to add a lot of FUD to the community. It hasn't been clear what GWT features would still exist in a notional 3.0, and J2CL was stuck behind Google's walls until just a couple weeks ago.