Coincidentally, a stack-based concatenative array language is exactly what I&#x27;m working on right now.<p>It combines all the readability of K with... all the readability of Forth.<p>It&#x27;s at <a href="https:&#x2F;&#x2F;github.com&#x2F;alpha123&#x2F;vio" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;alpha123&#x2F;vio</a> if you&#x27;re interested, but very much WIP. The VM is rather simple if you feel like poking around.<p>Other notable features would be built-in parser combinators (with an unreadable postfix regex-like syntax). Concatenative parser combinators are pleasantly surprising to use.