Manageable is a Rails >= 3.1 Engine that provides unobtrusive administration features for Rails applications.

As it is a Rails engine, you can easily include/replace all of its features, and you will be developing it as you are already used to develop normal Rails applications.

It has a minimal set of dependencies and does not force you on using other specific gems. People have their prefered set of utility gems (simple_form vs formtastic, will_paginate vs kaminari), so it tries not to impose anything on those lines, and you can choose what you want to use. By default, it provides a custom set of helpers for the most common operations.

It uses the beautiful Activo-2 administration theme http://github.com/dmfrancisco/activo/tree/activo-2

Source: http://github.com/fabiokr/manageable