Add a validation filter to your controller.

Wisepdf uses the shell utility wkhtmltopdf to serve a PDF file to a user from HTML. In other words, rather than dealing with a PDF generation DSL of some sort, you simply write an HTML view as you would normally, and let pdf take care of the hard stuff.

Abracadabra: The gem that swaps out text with a fully-compliant Rails form in one click using JQuery and rails.js.

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

Add drag and drop reordering to ActiveAdmin tables.

Save time and headaches, and create a more easily maintainable set of pages, with ActiveScaffold. ActiveScaffold handles all your CRUD (create, read, update, delete) user interface needs, leaving you more time to focus on more challenging (and interesting!) problems.

Wraps the Aliyun OSS as an Active Storage service.

Wraps the Aliyun OSS as an Active Storage service.

Plugin for running methods on ActiveRecord models after record is committed

Define custom health checks for your app (as in: are there any new users in the past 24 hours) and see the results in a simple /healthcheck page that you can use to monitor your production app with UptimeRobot, Pingdom, or other monitoring services. It's also useful as a drop-in replacement for the default `/up` health check endpoint for Kamal deployments.

animate.css for rails

Ships backbone and underscore to your Rails 3.1 application through the new asset pipeline. Rails 3.0 is supported via generators.

Job queue system to run job with Docker

A Sinatra app to view/manage beanstalkd queues that can be embedded in a Rails app similar to what's available in Resque

Bootstrap-ify pagination with Kaminari - Compatible with Bootstrap 2.x, 3.x

Browserlog is a live web log viewer for rails apps.

CMS built on rails with love.

Allows caching of pages with flash messages by rendering flash messages from a cookie using JavaScript, instead of statically in your Rails view template. Flash contents are converted to JSON and placed in a cookie by an after_filter (default) or a Rack Middleware (option).

Cactus is a CSS testing framework. It ensures that you always have the same CSS styling for DOM elements that you care about.

Wraps CanCan and RoleModel up to make role based authorisation really easy in Rails 3.x.