The official PagSeguro library

Passkit offers you a full Rails engine to serve Wallet Passes for iOS and Android in pkpass format.

Easily write arbitrary filters

A lightweight cron scheduler for the Que async job worker

Declaratively filter data via URL params, in any Rack app.

Adds tabbed interface and custom field type for globalize translations to Rails_admin

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...

Rails gem to push notifications for iOS, Android and Windows Phone devices

Record Cache for Rails 3

A smart sms verification tool

Additional Payment Gateways for Solidus

Track what product being viewed, what being purchased. Who are consistant buyers etc.

Spree Essentials provides a base for several other Spree Commerce extensions. The idea is to provide other extensions with common functionality such as an asset-upload interface, a markdown editor, and a common admin-navigation tab.

Enhances Enumerables to show progress while iterating. (Port of tqdm for Python.)

Turkee will help you to easily create usability studies, post HITs, and retrieve the user entered values from Mechanical Turk.

Add support to search through (potentially large) belongs_to associations in your Administrate dashboards.

VoteFu provides flexible voting capabilities for Rails applications. Features include up/down voting, star ratings, scoped voting contexts, Wilson Score ranking, Reddit Hot algorithm, counter caches, and first-class Hotwire support with Turbo Streams and Stimulus controllers.

Add a validation filter to your controller.

Rails way to harness the power of SQL "EXISTS" statement

ActiveRecord/Rails Integration for the Workflow library. Workflow is a finite-state-machine-inspired API for modeling and interacting with what we tend to refer to as 'workflow'.