FactoryGroup provides an abstraction on top of factory_girl, which will help you create reusable groups of factories which can be used across test cases.

A factory manager of factory bots.

This is a layer on top of FactoryGirl to use your model association and create dependencies automatically

Serve several clients with one single database with incremental and secure ids by tenant.

Simulate writing and reading from S3 by using your filesystem as a Fake S3.

Faker, a port of Data::Faker from Perl, is used to easily generate fake data: names, addresses, phone numbers, etc.

It's as easy as: rails g fake posts -n 50

An rails plugin that provides a fake framework to stub 3-party redirect page such as payment or oauth login.

Falconer Event Endpoint for Ruby and Rack

Fancybox3.

A small library to count things. Use Redis, Memory, or bring your own storage!

Create fancy tables which are semantic HTML5, are easy tostyle, and are beautiful.

This gem allows you to create unique readable fantasy names as identifiers for your active record objects. You can also define multiple identifier columns and alternatively use a UUID or Devise.friendly_token as identifier.

A simple Rails FAQ engine powered by markdown.

Rails tools I use

Helpers for working with the Twitter Bootstraps

A facetted classification framework for digital assets.

rails model-helper to store generated content in redis, for fastaccess

Uses table duplication to speed up migrations on large tables

FastExt is a framework for creating enterprise-level application style interfaces. FastExt is released as a Ruby Gem. The gem is to be installed within a Ruby on Rails 3 application.