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

Adds a class method to all ActiveRecord models in Rails that exports all rows in a single CSV file to an Amazon S3 bucket

A helper for creating declaretive interface for decent_exposure queries

A very simple and boring blogging engine for Rails.

Allows managed content pages in a Ruby on Rails 3.1+ application.

A Rails gem that provides a clean way to associate external IDs from third-party systems with your ActiveRecord models using polymorphic associations.

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+

Provides a simple way to include and manage release notes for internal applications by writing a markdown file

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

Simple Token-based security for Rails Apps

Easy permissions engine for Rails app.

UI extension for ez-permissions.

Easy resources engine for Rails app.

Easy database persisted sessions for Rails

Easy settings engine for Rails app.

Facades is a collection of front-end patterns and libraries designed to speed up development of web sites and applications.

HTML5 compatible social plugin helpers for Rails 3

Facebox for rails