Gem extends the class ActiveSupport::TestCase by adding assertions to test if before filters have been applied (via before_filter or append_before_filter) or skipped (via skip_before_filter).

Extensions and controller/view helpers for filtering glory

Different than attr_accessible/protected (that can still be used with this gem), you can specify which parameters will be allowed in your controllers.

This Ruby on Rails plugin adds a filtered_by method to your models. It accepts a hash of filters that are applied using scopes. In addition the plugin adds some view helpers to easily build filter forms.

Active record extensions to filter and serialize active record models.

Adds finalizers to ActiveRecord models to clean up both database child dependencies and external resources (APIs, etc). Finalizers run in background jobs and are fully retryable.

Adds support in Rails apps for final routes, routes that are drawn after all engines have drawn their own.

Shortcuts for Active Record queries in the ruby console.

Fine Uploader by Andrew Valums integrated for Rails 3.1+ Asset Pipeline

Fingerjam uploads your Jammit-compressed assets with fingerprinted filenames so they can be cached indefinitely

Access many functions of the Finviz Screener through API acces

Firaq.

A gem for integrating Firebase Authentication into your Rails application..

Use Firebase for your Ruby on Rails applications.

An easy way to get your data sent to Amazon Firehose

GUI for managing iptables. Also provides shorthand iptables rules to ban IPs who exceed configurable rate limits. See and manage blocked IPs from GUI.

Rails 3+4 firewall route constraints for keeping the bad guys out.

adds a first_by_created_at class method to active record models that search by binary search through auto-ascending primary key ids

Automatically allow Google-crawling and new visitors to your application access to content without requiring sign-in.

A gem to access the Firstjob api