rspec-rails is a testing framework for Rails 5+.

Kaminari is a Scope & Engine based, clean, powerful, agnostic, customizable and sophisticated paginator for Rails 4+

factory_girl provides a framework and DSL for defining and using factories - less error-prone, more explicit, and all-around easier to work with than fixtures.

Easy upload management for ActiveRecord

This gem is used by GitHub to render any fancy markup such as Markdown, Textile, Org-Mode, etc. Fork it and add your own!

Upload files in your Ruby applications, map them to a range of ORMs, store them on different backends.

Create JSON structures via a Builder-style DSL

Shoulda Matchers provides RSpec- and Minitest-compatible one-liners to test common Rails functionality that, if written by hand, would be much longer, more complex, and error-prone.

A Ruby framework for rapid API development with great conventions.

Use webpack to manage app-like JavaScript modules in Rails

help to kill N+1 queries and unused eager loading.

Ruby API for Elasticsearch. See the `elasticsearch` gem for full integration.

Active Merchant is a simple payment abstraction library used in and sponsored by Shopify. It is written by Tobias Luetke, Cody Fauser, and contributors. The aim of the project is to feel natural to Ruby users and to abstract as many parts as possible away from the user to offer a consistent inter...

Object oriented authorization for Rails applications

[Backported security patched version] A Ruby framework for rapid API development with great conventions.

Ransack is the successor to the MetaSearch gem. It improves and expands upon MetaSearch's functionality, but does not have a 100%-compatible API.

Ransack is the successor to the MetaSearch gem. It improves and expands upon MetaSearch's functionality, but does not have a 100%-compatible API.

Create and manage complex tmux sessions easily.

Tame Rails' multi-line logging into a single line per request

A rack middleware for throttling and blocking abusive requests