The official PagSeguro library

Playbook UI is built out in Ruby View Components and React Components. Playbook takes a modern design approach and applies it in a way that makes it easy to support bleeding edge or legacy systems.

Simple PDF generation using the prawn library.

Easily write arbitrary filters

Jcrop plugin for rails admin. Image cropping made easy!

Rails API Auth is a Rails Engine that implements the "Resource Owner Password Credentials Grant" OAuth 2.0 flow as well as Facebook authentication for API projects.

Web interface to manage i18n translations for your apps to facilitate the editors of your translations. Provides a low-tech and complete workflow for importing, translating, and exporting your I18n translation files. Design to allows you to keep the translation files inside your projects git repo...

Settings is a plugin that makes managing a table of global key, value pairs easy.

React-Router for Rails Asset Pipeline

Record Cache for Rails 3

Manage your Redis instance (See keys, memory used, connected client, configuration, information)

Nice type and params for temporary JSONAPI support.

A simple DSL to generate QuickBooks IIF file

Roles.

This gem makes Rails console sessions less dangerous in specified environments by warning, color-coding, auto-sandboxing, and allowing read-only external connections (disables job queueing, non-GET requests, etc.)

A nifty service layer for your Rails app

This gem is a simple, easy-to-use declarative role-based access control system for Rails

spinach-rails adds Rails support to spinach

Generate swagger documentation for your Rails REST API using YARD

Add support to complex resources of PostgreSQL, like data types, array associations, auxiliary statements (CTE), and full-text search (FTS)