Send emails asynchronously using delayed_job.

Hanmoto provides a simple way to manage public pages with Asset Pipeline.

Headhunter is an HTML and CSS validation tool that injects itself into your Rails feature tests and automagically checks all your generated HTML and CSS for validity. In addition, it also looks out for unused (and therefore superfluous) CSS selectors.

Ruby library for image galleries generation.

New Relic (on Heroku) currently reports queue times as queuing at the router level. The goal of this gem is to provide new relic with the proper queueing time for requests, which takes into account queue time at the dyno level.

Rails engine to do user roles in an RDBMS for hydra-head

Initjs helps you organize your javascript to play nice with Rails' asset pipeline. Providing a simple and automatic way to execute your javascript into a specific page.

Easily convert your checkboxes into iPhone style On/Off buttons. Use with Rails 3.1 Assets Pipeline.

istox backend shared gem

Rails engine built on top on Active Job gem to persist job results and notify job status changes

A Rails engine to durably deliver schematized events to Amazon Kinesis via DelayedJob.

Why make the browser load images that the user isn't going to see? This Rails engine prevents images from loading until they're actually going to be displayed. This saves bandwidth, reduces server load, and helps the user stay under their data quota.

Namespace and Selectively Execute Javascript

Handles application errors and model validations

Knowledge Base is a bunch of models for Ruby on Rails that you probably need to build your own

Metadata aggregation and enrichment for cultural heritage institutions.

Kuhsaft is a Rails engine that offers a simple CMS.

LHC is an extended/advanced HTTP client. Implementing basic http-communication enhancements like interceptors, exception handling, format handling, accessing response data, configuring endpoints and placeholders and fully compatible, RFC-compliant URL-template support.

LogicalModel allows to use a resource as a model. It is based on web presentation http://www.slideshare.net/ihower/serviceoriented-design-and-implement-with-rails3

LtiProvider is a mountable engine for handling the LTI launch and exposing LTI parameters in your rails app.