I'm glad you like it! :) I'm very curious about your feedback after using Luna, don't forget to keep in touch with us after the release!

We do not integrate with any language, because the visual representation is just a different syntax for Luna. In fact we keep both syntaxes - textual and visual with the same powers, so you can switch between them, but they are just syntaxes for the same language.

Integrating with Julia (or other lang) would be hard because the language has to be designed in such way that it will allow for such dual representation. We put an enormous effort to design Luna this way. However it will be possible to integrate Julia in such way, that some of the nodes would be written in Julia and then even allow to in-place expanding nodes to small text-editors to preview the code in place. It will however not be possible to translate Julias code to graph or vice versa.