Chanko is a Rails extension tool

a gem to help you select chinese area like province, city and district

Integrated user activity notifications for Ruby on Rails. Provides functions to configure multiple notification targets and make activity notifications with notifiable models, like adding comments, responding etc.

A Rails engine for comments.

A responsive theme for Active Admin

SortableTree provides sorting of lists and hierarchies from ActiveAdmin index views.

Rails gem for dynamically adding and removing nested has_many association fields in a form. Uses jQuery and supports multiple nesting levels. Requires Ruby 1.9+ and the asset pipeline.

XDan's jQuery DateTimePicker packaged for the Rails Asset Pipeline

Add a blog to your Rails application in minutes with this mountable Rails Engine

Godmin is an admin framework for Rails 5+. Use it to build dedicated admin sections for your apps, or stand alone admin apps such as internal tools.

LINES lets you manage your posts in a clear, consistent frontend. The gracefully slender editor keeps your editing simple and lets you just splash around in your ideas. Once you're happy, just hit publish and see your text, code examples, images, and links shine.

rails_kindeditor will helps your rails app integrate with kindeditor, including images and files uploading.

Kuroko2 is a web-based job scheduler/workflow manager created at Cookpad Inc.

Translate your apps with pleasure (sort of...) and for free. It's simple i18n web interface, build on top of twitter bootstrap, that one may find helpful in translating app by non-technicals.

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

Flexible workflow gem.

A new style forum for tiny community as Rails Engine. You can mount this in you apps.

An easy extension for Paperclip to crop your image uploads using jCrop

OpenConferenceWare is an open source web application for events and conferences. This customizable, general-purpose platform provides proposals, sessions, schedules, tracks and more.

Rails engine allowing to configure and manage business processes in rails including user operations, background operations, etc. '