Datacenter Hypervisor

Gives you binaries like mysql2csv, mysql2json, and mysql2xml, and Ruby classes to match.

Birthday gem creates convienent methods for date and datetime fields in ActiveRecord, making it possible to look for birthdays without a hassle.

It can create postgresql dump from mysql database or directly load data from mysql to postgresql (at about 100 000 records per minute). Translates most data types and indexes.

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.

A Rails 4 ActiveRecord plugin that adds group_by_day, group_by_month, etc. Not timezone aware, but supports sqlite.

Rails-bigint-pk modifies Rails so that it uses 64-bit primary and foreign keys. It works with MySQL and PostgreSQL and has versions for Rails 3 and 4.

Adds support in ActiveRecord for foreign_keys, complex indexes and other database-related stuff. Easily create foreign_keys, complex indexes and views.

An ActiveRecord adapter for MySQL, based on mysql gem.

This is an ActiveRecord connection adapter for MySQL Spatial Extensions. It is based on the stock MySQL adapter, but provides built-in support for spatial columns. It uses the RGeo library to represent spatial data in Ruby.

ArchiveTree is a Ruby Gem that makes it easy for you to create beautiful chronological archive trees of your models. For instance, you can create a tree for your blog posts.

Environment setup and step definitions for testing WordPress with Cucumber

Framework for using a distributed mutex along with an implementation of a mutex stored on a MySQL database.

Enhanced the google geocoder to take advantage of the premier account offering

MySampler is a tool written in ruby to poll SHOW GLOBAL STATUS in MySQL and output the values to either a CSV or graphite/carbon. The interval at which the polling occurs can be specified and the output can be either the absolute or relative values, so you can see change over time. If logging to CSV, the a date stamp is appended to the CSV file and it is rotated hourly (to be configurable later).

A service for monitoring MySQL and exposing its health through an HTTP interface for use with TCP load balancers (like haproxy) that support out-of-band health checks using HTTP.

Ruby implementation of the MythTV communication protocol, and interface to the MythTV database

mysql gem-based driver for RDBI

This gem provides an acts_as_list compatible capability for sorting and reordering a number of objects in a list. The class that has this specified needs to have a +position+ column defined as an integer on the mapped database table. This gem requires ActiveRecord 3.0 as it has been refactored to use the scope methods and query interface introduced with Ruby on Rails 3.0

sql_tagger inserts stack trace comments into SQL queries.