[tosh]

Ghostty

https://ghostty.org

[pjmlp]

Another one to the list, however it hardly sounds like a killer application.

[pdpi]

It's been my daily driver for close to a year now. It might not be a killer application, but it's certainly enough to prove Zig isn't vapourware.

[pjmlp]

If that is enough, there are plenty of languages around that fit the bill.