Seed Fu is an attempt to once and for all solve the problem of inserting and maintaining seed data in a database. It uses a variety of techniques gathered from various places around the web and combines them to create what is hopefully the most robust seed data system around.

Jetpants is an automation toolkit for handling monstrously large MySQL database topologies. It is geared towards common operational tasks like cloning slaves, rebalancing shards, and performing master promotions. It features a command suite for easy use by operations staff, though it's also a full Ruby library for use in developing custom migration scripts and database automation.

ActiveRecord and Mongoid extension for easier date scopes and time ranges

Provide an easy way to check the consistency of the database constraints with the application validations.

Monologue is a basic blogging engine. It is a Rails mountable engine so it can be mounted in any 4.0.X + apps

ActiveRecord and Mongoid extension for easier date scopes and time ranges

A query aggregator for OSINT based threat hunting

Apartment allows Rack applications to deal with database multitenancy through ActiveRecord

Multimedia story telling for the web.

This gem creates a scope for unread objects and adds methods to mark objects as read

Solves the problem of trying to get all the changes to an object during a transaction in an after_commit callbacks.

Test your Rails Engines without needing a full Rails app

Make it easy to upsert on MySQL, PostgreSQL, and SQLite3. Transparently creates merge functions for MySQL and PostgreSQL; on SQLite3, uses INSERT OR IGNORE.

Integrated user activity notifications for Ruby on Rails. Provides functions to configure multiple notification targets and make activity notifications with notifiable models, like adding comments, responding etc.

Add binary (not string) UUIDs to ActiveRecord in MySQL

Your Rails console, 1984 style

Transparent ActiveRecord encryption

A collection of libraries for working with SQL on top of ActiveRecord's connection.

Add binary (not string) UUIDs to ActiveRecord in MySQL

ThumbsUp provides dead-simple voting capabilities to ActiveRecord models with karma calculation, a la stackoverflow.com.