something like dictionary, wiki, or information card

Admin framework for rails + mongoid web applications.

Webcms is a wrapper that automatigically will create a layer. It enables programmers to quickly build and release websites with CRUD CMS capabilities

ClassyEnum adapter for Mongoid

Supports rules-based cloning, Mongoid, and distributed operations

A simple Rails 3 recommendations engine using Mongoid models

Allows saving of comicvine resources to a Mongodb using Mongoid

Handles adding comments to models in a very simple way.

Common-content is a simple CMS rails engine plugin for Mongoid based apps

Includes a couple models and an api to make it easy to create notifications and the actions associated with them.

Provides database storage via Mongoid.

Contentful to local database synchronisation for Rails

new cqm validator library

The csv_rails gem provides a download csv file with rails.

Culler is a tool for finding and removing duplicate files on disk. It offers a number of comparison techniques and is pluggable to allow for custom comparison.

This gem solves a common problem when you try to write basic associations across multiple ORMs.

A tool that helps you generate data into multiple databases

Helps building data pipelines. It handles recomputing dependencies and parallel execution.

ActiveModel validation against duplicating records.

Deep Attributes allows to treat complex attributes as such. Right now the only way to access these attributes is via Mongoid, but in theory this should be database layer agnostic