A Rails Engine that handles Chargify Webhooks requests and validates and forwards them off to registered loops.

ChartJs with ruby.

Will draw chart

gem chartist_js for include chartist-js lib to RoR project

This Gem is based on this github project https://github.com/nnnick/Chart.js/tree/master

chartjs-zoomable lets you use Chartjs graphs using helper methods in your views with zoom and pan functionality

send newsletter with chaski

Chaskiq.

Adds a chat functionality to any Rails 3 application. Send chat messages to online users within your application like any gmail/facebook chat. It assumes that you are using devise gem and user model as devise model for login.

Making it easy to set it up a live chat on your website.

A rails plugin for the chawk storage engine for time-series data.

HTTPS login from a separate domain

Add just a couple of lines to your app, and have it receive exceptions from your other apps via the hoptoad_notifier.

This gem will help you to handle has_many :through associations when you need to add/remove these ones with checkboxes.

Check non-reloadable files changes on Rails apps

Rails plugin that do check-in/check-out of models of ActiveRecord.

Add some helpers that checks current path.

Check box tag that submits value whether checked or unchecked

A gem for validating chemical formula and calculating elemental analysis

Set of mixins, services and helpers for Rails as an Engine.