Metaa adds meta tags to your Rails application with ease.

Want to get a path to an AR object, but don't know what the object is? Want to set a controller's instance variable, but don't know what controller you're in. Meta Magic can help.

Write highly focused and testable view presenter classes for your Rails controllers and actions

A gem to create meta tags easy!

metasploit-framework

Simple metatags and page titles for Rails.

SubdomainRoutes add subdomain conditions to the Rails routing system. Routes may be restricted to one or many specified subdomains. An URL will be recognised only if the host subdomain matches the subdomain specified in the route. Route generation is also enhanced, so that the subdomain of a generated URL (or path) will be changed if the requested route has a different subdomain to that of the current request. Model-based subdomain routes can also be defined.

Michael HintBuble allows you to generate hint bubbles and tooltips in Rails applications using the same syntax used for rendering templates.

Helper for microformats, possibility of nesting.

Action processing with Callback + Rescue handlers for different MIME types in Rails

MiniAuth is a pragmatic authentication gem for Rails that is inspired by Laravel's guards pattern that provides highly customizable and simple authentication for your web applications and APIs.

Mission Control dashboard for monitoring and managing SolidCache

Use Mixpanel's JavaScript library from your backend with ease

Basic mobile device detection for rails applications

mobile-rails provides an easy way to make a controller mobile aware. If a mobile user is accessing your website, a different view may be used if it exists.

Modalist is a powerful & lightweight (not necessarily but primarily ajaxified) modal plugin.

Automatically format model attributes using Redcarpet (markdown) and Tender/Lighthouse extensions.

Rails 4.2\'s Strong Parameters in modular form, usable in Sinatra. The listed authors are only responsible for code extraction, full credit and respect goes to those talented individuals who actually wrote the code!

Form builder for apps which use mongoid

Rails session stores for MongoMapper, Mongoid, or any other ODM. Rails 5.0 compatible.