Create database backups to share with others across your dev team. Other developers can restore from backups you've created.

Different relational databases treat text search very differently. DbTextSearch provides a unified interface on top of ActiveRecord for SQLite, MySQL, and PostgreSQL to do case-insensitive string-in-set querying and CI index creation, and basic full-text search for a list of terms, and FTS index ...

An earth-simulation environment with ActiveRecord models and data

Genealogy is a ruby gem library which extends ActiveRecord models in order to make its instances act as relatives so that you can build and query genealogies

Encrypt data in mass with Active Record Encryption

extension for mysql2 to add client-side variable binding, by adding method Mysql2::Client#xquery

QuickSearch is a toolkit for easily creating custom bento-box search applications

Common libraries for RedmineUP plugins (www.redmineup.com) for Redmine. Required Redmine from http://redmine.org

ScheduleFu allows scheduling events with dates and times. It includes both the model and view portions of a calendar. It borrow heavily from acts_as_calendar (http://github.com/dball/acts_as_calendar) and calendar_helper (http://github.com/topfunky/calendar_helper).

Simple Role System for Rails Apps

Simple and real-life tested Rails::Engine admin interface

Opt-in validations for your ActiveRecord models based on your MySQL database constraints, including text field size, UTF-8 encoding issues, and NOT NULL constraints.

extracted code from mysql2

It is a library that performs extended verification when an error occurs when executing SQL.

Gives a hook on MySQL warnings that allow you to either raise or log them.

Define attributes in arel

Rails: Get notified when an after_commit block blows up

An easy to use, framework agnostic, customizable library to easily store and retrieve application configuration.

Add MySQL geometry type to Active Record.

Automatic Foreign Key automatically generates foreign-key constraints when creating tables or adding columns. It uses SQL-92 syntax and as such should be compatible with most databases that support foreign-key constraints.