Question: **Is there any kid of "repl + extra features" (like showing docs, module autoreload etc.), like iPython, but for Nodejs?**

And I mean something *that runs locally & offline.* This is a must. And preferably to work both in terminal mode and have an optional nicer GUI on top (like iPython + iPythonQT/Jupyter-qtconsole).

The standard Nodejs repl is usable, but it has horrible usability (clicking the up-arrow cycles through the repl hisoty *by line* instead of *by multi-line command*, as you would expect any sane repl to work for interactively experimenting with things like class statements), and is very bare-bones. Every time I switch from iPython to it it's *painful.* A browser's repl like Chrome's that you can run for node too by starting a node-inspector debug session is more usable... but also too cumbersome.

Answer: 
I've been looking for "ipython for node" for years and here's how I would answer your question:

No.
I wrote [node-help](https://github.com/foundling/node-help "node-help") for exactly this reason, maybe it would work for you? It pulls from the Node.js JSON API and works offline. Major versions 8,9 and 10 are supported. 

There is no gui functionality for it, though, but I did take some care to make it easy on the eyes.