Rails mail_to helper with encoding (removed from core in Rails 4.0)

Wrapper over Rails Event Store with conventions and transparent Rails integration

Easy collecting your Rails apps metrics

A smart api explorer for a rails app

Gem for opening up your current fontello font in the browser from the command line and copying & converting the files for your Rails app (inclusively Sass enhancements).

Jcrop plugin for rails admin. Image cropping made easy!

Concise DSL for generating OpenAPI Specification 3 (OAS3) JSON documentation for Rails application.

Wrappers for JavaScript alert(), confirm() and other flexible dialogs using Twitter's bootstrap framework for Rails 3.1+

Allows a Rails application to run multiple subdomain sites transparently inside of a single Rails instance. This allows for multi-homed or multi-tenant databases very easily.

React-Router for Rails Asset Pipeline

Metdium Editor integrated in Rails asset pipeline

animate.css for rails

This gem makes Rails console sessions less dangerous in specified environments by warning, color-coding, auto-sandboxing, and allowing read-only external connections (disables job queueing, non-GET requests, etc.)

Foundation Icons on Sass for Rails

Where or function backport from Rails 5 for Rails 4.2

This gem provides jQuery FancyBox 2 for your Rails 3.1/4.0 application. This gem is based on the gem for Fancybox 1.x by Chris Mytton

Rails integration for Graphiti

Simple, plug & play Rails scaffold building companion for Turbo-Rails and Hotwire

jQuery migrate for rails application

Rails plugin that reports exceptions to Hoptoad.