Validate Rails forms on the client side, simply

A simple newsletter engine for rails.

Use render_cell in your specs.

Use searchable selects based on Select2 in Active Admin forms and filters.

This 'acts_as' extension provides multi-table inheritance for rails models.

JWT authentication solution for Rails APIs

Create, manage, and send scheduled email sequences and drip campaigns from your Rails app.

A Rails 3+ Engine providing a basic contact form. I used Formtastic to keep things simple, and to hook into your apps custom Formtastic stylesheets.

Adding 'Website' field to the contact form.

Captcha-Plugin for Rails

GeoBlacklight provides a world-class discovery platform for geospatial (GIS) holdings. It is an open collaborative project aiming to build off of the successes of the Blacklight Solr-powered discovery interface and the multi-institutional OpenGeoportal federated metadata sharing communities.

Gretel is a Ruby on Rails plugin that makes it easy yet flexible to create breadcrumbs.

Process your attachments with FFMPEG

Paul Revere provides a model and helper methods to do one-off style announcements.

rails_sortable provides easy drag & drop sorting for rails 4 and 5.

Ruby Adapter for Raygun

Timeseries data monitoring framework running as a rails engine

Sitepress rails integration.

Show one-time messages to users in your Rails app

Crowd-sourced translation and localization engine for Rails.