I've worked with Rails in the past, and I used ActiveAdmin to make administration panels. I'm moving to Node and I'll be using Sails as a framework for a one-page app, and probably AngularJS on the client side, but there is still the issue of the administration panel.
Given that Sails pretty much setups all your resources for RESTful API access, I was thinking about using a client-based administration panel. But I don't know if such thing exists. If it doesn't I guess I'll be making my own, but I don't want to reinvent the wheel.