I've had a problem.
I've found a solution.
I've wrote a solution.
I've used it.

But can anybody tell me, what is it?

https://github.com/pyromaniac/contextuality

Hi there! I've published new Mongoid::Orderable gem. It uses batch mongoid $inc and proper assigns position while moving between scopes. I hope you'll like it.

Aloha, i've just launched the Puffer project. It is a rails >= 3.1 admin interface builder. Here it is: puffer

Main features
* Supports different ORM's through orm_adapter (at the moment - full AR support and partial Mongoid).
* It is really flexible because of components ideology (components are the most similar to apotomo widgets).
* It configures through controllers DSL and has routing-based resource hierarhy.
* It supports hierarhical models (nested_set, ancestry) from the box.
* It has it's own light CMS engine (puffer pages).