Useful for Flash-based file uploaders (SWFUpload, Uploadify, Plupload, etc)

A simple yet configurable rails view helper for displaying flash messages.

Flattens the Active Admin interface, and allows easy customisation of your Admin backends

Description of your gem (usually longer).

FlowmorRouter allows you to create 'friendly' routes easily from objects stored in the database as well as by simply placing templates into app/views/static folder.

Use Facebook's Flux dispatcher and Node EventEmitter in your Rails project.

Font Kit Rails - Awesome font kit for your rails app.

Add event tracking to any Rails model easily. Every event adds automatic IP geolocation, and any arbitrary metadata you may want to add. The gem comes with polymorphic associations, and async support via ActiveJob, so you can track events in the background without any overhead. Great for tracking login attempts, file downloads, profile visits, or any interaction where knowing the where matters. It also allows you to trivially build analytics dashboards and audit logs for all your app events.

Add Foreman support for software repositories and puppet environments management.

Forest is a modern admin interface that works on all major web frameworks. This gem makes Forest admin work on any Rails application (Rails >= 6.1).

Tired of repeating 'validates_format_of' with the same regex expression across your models only to validate the same email address and postal code fields? So am I. Use format_for_extensions to dynamically define reusable formats for any ActiveRecord model attribute you want.

Formatting capabilities for Rails BufferedLogger

courtesy - Wikipedia: Maker-checker (or Maker and Checker, or 4-Eyes) is one of the central principles of authorization in the information systems of financial organizations.The principle of maker and checker means that for each transaction, there must be at least two individuals necessary for its completion. While one individual may create a transaction, the other individual should be involved in confirmation/authorization of the same. Here the segregation of duties plays an important role. In this way, strict control is kept over system software and data, keeping in mind functional division of labor between all classes of employees.

Token validation for distributed resource servers

Large collection of useful Rails 3.1 helpers for SEO, Metatags, Facebook OG tags, integration for analytics services like google, woopra, olark, mixpanel and much much more...

Fuel's goal is to be a simple yet customizable blogging gem.

fuelux-rails project integrates Fuel UX Bootstrap extensions for Rails 3.1 Asset Pipeline

Asset pipeline bundling of the fullcalendar jquery plugin.

lazy_high_charts is a Rails 3.x gem for displaying Highcharts graphs.

Administration interface framework for fullstack