Yes, like 'M-x calc' which gives you a very decent RPN calculator.
oh calc is way more than that. it's a cute CAS. And a nice RPN calc. (which I think is simple-calc-mode actually)
Emacs also has bindat, a nice DSL to create bytes structures (for network packets or FFI)
And that's just the vanilla distribution.. Anyway lisp.
I liked that roamer has a similar idea, the name/hash lines seems very straightforward. Also a bit of acme in it where text as a bit of meaning.
Maybe it will give wdired ideas too.