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.

Rails plugin, send and preview email with GOV.UK Notify

A content management framework for Rails (compatible with 3.1 and 3.2)

ViewComponents that are helpful in viewing user engagement metrics from Ahoy.

Rails tagging system based on PostgreSQL arrays

Dedicated controllers for each of your Rails route actions

A small and simple efficient extension to Monologue that replace the default WYSIWYG editor with a Markdown editor.

MTDevise Rails 5.1 engine that adds multi-tenant basecamp style user logins (multi-tenant authetication using devise) to your ruby on rails application.

multi_fetch_fragments allows you to render a collection of partials through Rails multi read caching mechanism.

MundoPepino is a set of reusable step definitions to test Rails apps with Cucumber

A simple notification system for sleede rails project

OpenSeadragon is a javascript library for displaying tiling images. This gem packages those assets and some Rails helpers for using them

A gem to automate using outdated-browser with Rails >= 4.

Pages.

Human Readable Change Log for Paper Trail'd data

Modeled after active_model_serializers, this gem allows you to create deserializer classes for incoming Rails parameters.

Parliament Utils gem.