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

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.

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

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!

Automatic Rails code style checking tool. A RuboCop extension focused on enforcing Rails best practices and coding conventions.

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

A Ruby framework for rapid API development with great conventions.

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

Use webpack to manage app-like JavaScript modules in Rails

The git gem provides an API that can be used to create, read, and manipulate Git repositories by wrapping system calls to the git command line. The API can be used for working with Git in complex interactions including branching and merging, object inspection and manipulation, history, patch gene...

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

Object oriented authorization for Rails applications

Deploy web apps in containers to servers running Docker with zero downtime.

A Language Server Protocol SDK

A rack middleware for throttling and blocking abusive requests

Powerful object-based searching and filtering for Active Record with advanced features like complex boolean queries, association searching, custom predicates and i18n support.

Powerful object-based searching and filtering for Active Record with advanced features like complex boolean queries, association searching, custom predicates and i18n support.