[perihelions]

I'd expect there will be a lot of new solutions coming soon, because Polymode [0] seemingly solves the hard problem the org-babel struggles against. The immiscible major modes, and all that extra syntax and buffer-switching that org-babel needs to work around that problem.

[0] https://www.masteringemacs.org/article/polymode-multiple-maj...

[luispauloml]

There is EIN, which indeed uses Polymode, and of which I am a happy user: http://millejoh.github.io/emacs-ipython-notebook/