I've been using Org for a little over a year, and it's actually quite nice. To support a blog post last year (https://reindeereffect.github.io/2020/05/05/index.html) I did my own quick and dirty rendition of chunk labels, chunk chain navigation, and clickable references.
Lately I've built a faster, mostly drop-in replacement for org-babel-tangle (that doesn't unnecessarily clobber files that haven't changed); and I'm finishing up a more complete chunk formatter for HTML export, along with usable chunk index generation. Once that's done, I'll quit nerd sniping myself on literate programming systems for awhile and finish up a missive on programming a Turing machine to solve the Towers of Hanoi.
I keep meaning to experiment with bable/tangle in Emacs.
I setup a simple literate configuration of my init file via markdown, which worked out really well, but doing it "properly" in org-mode would be a nice evolution.
With markdown I just search for code-blocks, write them all sequentially to a temporary buffer and evaluate once done. So it is very simplistic, but also being able to write and group things is useful:
