Recursively traverse trees using a single SQL query

*Atomic archiving/unarchiving for ActiveRecord-based apps* We had the problem that acts_as_paranoid and similar plugins/gems always work on a record by record basis and made it very difficult to restore records atomically (or archive them, for that matter). Because the archive and unarchive methods are in transactions, and every archival record involved gets the same archive number upon archiving, you can easily restore or remove an entire set of records without having to worry about partial deletion or restoration. Additionally, other plugins generally screw with how destroy/delete work. We don't because we actually want to be able to destroy records.

With Amountable, you can easily attach, organize and sum Ruby money fields to your models without migrating.

Brainstem allows you to create rich API presenters that know how to filter, sort, and include associations.

Rails I18n library for ActiveRecord model/data translation using PostgreSQL's JSONB datatype. Translations are stored directly in the model table rather than shadow tables.

A user-centric flagging extension for Rails 3 applications.

Ruby gem that automatically adds a lock timeout to all Active Record migrations

pg-eyeballs is a ruby gem that gives you detailed information about how the SQL queries created by the active record code you write are executed by the database. It gives you an easy, ruby friendly way to see the output of the Postgres EXPLAIN command and integrates with the popular query analysis tool gocmdpev

Organize ActiveRecord model into a tree structure using PostgreSQL LTree

A lightweight cron scheduler for the Que async job worker

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 repository where they should be.

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.

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

Jcrop plugin for ActiveAdmin, enable image cropping solution on image fields

Add drag and drop reordering to ActiveAdmin tables.

UI interface for rails-settings-cached in active admin

Rails engine to generate instant reports from adhoc SQL query.