Crummy is a simple and tasty way to add breadcrumbs to your Rails applications.

A configurable and documented Rails view helper for adding gravatars into your Rails application.

Reverse proxy for Ruby on Rails

a module for streaming dynamically generated zip files

Auto-submit Rails exceptions as new issues on GitHub

Protect attributes from mass assignment

Wrap your objects with a helper to easily show them

A view layer for your Rails apps that separates structure and logic.

Easy SQL based report generation with the ability to accept request parameters and render multiple formats.

Accessing REST services in a flexible way

Rails extensions for using Roar in the popular web framework.

Adds the mobile format for rendering views for mobile device.

A simple framework for building APIs with Grape

Static page caching for Action Pack (removed from core in Rails 4.0)

Convert html to word docx document.

ActionView Record Tag Helpers

twitter-typeahead-rails packages the typeahead.js jquery plugin for rails

Write Rails controllers with one class per action

Rails for zurb foundation CSS framework. Form builder, flash message, ...

This gem provides the leaflet.js map display library for your Rails 4+ application.