Provides a single point of entry for using basic features of ruby ORMs

Search object DSL

Provides enhancements to ActiveRecord to handle spatial datatypes in PostgreSQL and MySQL.

Retries database transaction on deadlock and transaction serialization errors. Supports MySQL, PostgreSQL and SQLite (as long as you are using new drivers mysql2, pg, sqlite3).

Translation Center is a multi lingual web engine for Rails 3 apps. It builds a translation center community with translators and admins from your system users.

uffizzi_core

Import tabular data from spreadsheets or similar sources into data models

Associate a Ruby PORO with an Active Record class and have it quack like one.

Allows the use of CockroachDB as a backend for ActiveRecord and Rails apps.

This 'acts_as' extension provides multi-table inheritance for rails models.

Provides enhancements to ActiveRecord to handle spatial datatypes in PostgreSQL and MySQL.

Auto-create models, views, controllers, and routes with this slick Rails extension

Compose, decouple and manage domain logic and data persistence separately. Works particularly great for composing form objects!

Download, pull out of a ZIP/TAR/GZ/BZ2 archive, parse, correct, and import XLS, ODS, XML, CSV, HTML, etc. into your ActiveRecord models. Uses Upsert internally for speed.

Execute your ActiveRecord migrations with Percona's pt-online-schema-change. Formerly known as Percona Migrator.

Safe destroy for ActiveRecord.

Ruby workflow/orchestration engine

ruby-plsql gem provides simple Ruby API for calling Oracle PL/SQL procedures. It could be used both for accessing Oracle PL/SQL API procedures in legacy applications as well as it could be used to create PL/SQL unit tests using Ruby testing libraries.

SQL input/output plugin for Fluentd event collector

Fast fuzzy string matching for rails