Metafy is a Gem for Rails 3 that makes it possible to easily add dynamic attributes to any ActiveRecord model. These lightweight, meta attributes work just like normal database column attributes on your ActiveRecord model and are fully searchable (i.e. you can find records by values contained in these dynamic attributes).

It is a very simple Rails plugin to help you customize your pages' meta tags a little bit easier.

Rails meta tags helpers

DB-Configurable type description. Uses hstore on the models. A demo app is running at http://meta-types.herokuapp.com

Metova libraries for Ruby on Rails

Metricky

Metricky

metrics-graphics for the Rails Assets Pipeline

metro-ui-rails project integrates Metro-UI CSS toolkit for Rails 3.1 Asset Pipeline

Mi is a generator of migration file instead of `rails generate migration`.

Middle Management hires and fires your delayed_job workers automatically so that you get all of your work done quickly for as little money as possible.

Facebook, Twitter and Instagram integration for Ruby on Rails

MiniBacktrace allows you to take advantage of the Rails.backtrace_cleaner when using MiniTest. This includes everyone using Rails 3 with Ruby 1.9.

Easily specify mobile-specific view template for mobile devices in Rails application.

Ruby gem allowing Ruby on Rails developers to create REST API’s using metadata defined inside their ActiveRecord models.

Graphics for your rails models with MetricsGraphics.js and NVD3. It may show count(or average, or sum, or another sql agregate function) of models for each day with grouping, conditions. Uses Redis for store statistics.

Easily convert ActiveRecord models to SQL scripts.

Mountable Hotwire/Tailwind dashboard engine that visualizes Solid Queue job queues and metrics.

MODS Display is a gem to centralize the display logic of MODS metadata.

Makes the modularity.js framework available to Ruby on Rails applications.