Which Ruby on Rails admin plugin do you use and why? What are the pros and cons of different admin gems?

Question

We need a dead simple, but secure, admin plugin for Rails. We're on 2.x but are considering a port to 3.x.

Which admin plugin do you use, and why? What are the pros and cons of others? There are a few admin plugins available, and we would like to draw on the experience of others before choosing one.

And by admin plugin, I mean a plugin to help us manage the data and users of the application.

Thanks!

Answer 1

This is currently the most popular one: https://github.com/sferik/rails_admin

It's a Rails engine rather than a plugin, but it's good looking and useful.