ErrorKit allows you to track errors within your application and generate a notification when they happen.

Etat is a minimalistic gem to help you (me, for now) manage some states in your Rails app.

Track and publish user events

The Event-Sourced Accounting plugin provides an event-sourced double entry accounting system for use in any Ruby on Rails application.

Exportable will help you in exporting ActiveRecord models in to different output formats including CSV, XLS etc.

An extension of simple_form, add layout function and add input controls based on bootstraps.

Rails 3 Renderer for JSON compatible with Sencha Extjs 3+

This gem allows you to specify permissions at controller action or helper methods levels.

It exposes `/globalize/translations.json` with JSON of all translations in the app

Allows registration of anon and Facebook users in your rails app

A Rails engine for mainpulating factories via API

Simply creates an HTTP API for your FactoryGirl factories to be used by client tests.

A web interface for factory_girl

Simulate writing and reading from S3 by using your filesystem as a Fake S3.

A picture gallery supporting tagging, groups and much more.

Create fancy tables which are semantic HTML5, are easy tostyle, and are beautiful.

Favorite stuff with this gem.

A dropin utility that adds favourites functionality to any object

Overrides the original pagination with the paginative gem

A Rails engine for administrative access to a Fedora Commons repository based on the Hydra Project repository application framework.