Extends your user model with friendships management methods

A utility that adds class based enum functionality to ActiveRecord attributes

With more than one application server, validates_uniqueness_of becomes a lie. Two app servers -> two requests -> two near-simultaneous uniqueness checks -> two processes that commit to the database independently, violating this faux constraint. You'll need a database-level constraint for cases li...

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

Garner is a cache layer for Ruby and Rack applications, supporting model and instance binding and hierarchical invalidation.

HasSecureToken provides you an easily way to geneatre uniques random tokens for any model in ruby on rails. **SecureRandom::base58** is used to generate the 24-character unique token, so collisions are highly unlikely.

Inkwell provides simple way to add social networking features like comments, reblogs, favorites, following/followers, communities, categories and timelines to your Ruby on Rails application.

Convert japan prefecture code (JIS X 0402 based) into prefecture name.

Add schema comments in your migrations, see them in model annotations and db/schema.rb dump

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.

Import tabular data from spreadsheets or similar sources into data models

Amazon Redshift _makeshift_ adapter for ActiveRecord 5.

Compatible migration file between Rails 4.2 and 5+

Decreases the need to write integration tests by ensuring that the things you stub or mock actually exist.

Rails integration for BreezyJS

Safe destroy for ActiveRecord.

Adds group and membership functionality to Rails models

Migrate large tables without downtime by copying to a temporary table in chunks. The old table is not dropped. Instead, it is moved to timestamp_table_name for verification.

Likeable allows you to make your models...well...likeable using redis.

Add support for master/slave database database clusters in ActiveRecord to improve performance.