FORTH is still used to bring up new silicon because of its tiny core, you only need a couple of working assembly instructions to bootstrap yourself into a working system, you could do this entirely in cache or a small static RAM if you don't have a working memory controller yet.
It is also used all over the place in embedded controllers, https://arduino-forth.com/ , http://www.piclist.com/techref/microchip/language/forths.htm , https://github.com/nimblemachines/muforth , from PICs to ARMs and everything in between.
You won't see a lot of hype around it and repos tend to be old because they 'just work', typically a user of such a system would download it and customize it to the point that sharing it would be pointless, the whole idea is to extend the language to become the application.