Keep your DB schema in sync across all branches effortlessly. Install once, then use `rails db:migrate` normally — the gem handles phantom migration rollback automatically, eliminating schema conflicts and inconsistent database states. Stop wasting hours on DB maintenance locally, CI, staging/sandbox, or even production.

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

Provide an easy way to maintain factories and traits from FactoryBot

A Rails generator that generates Rails I18n locale files with automatic translation for almost every known locale.

Irwi is Ruby on Rails plugin which adds wiki functionality to your application.

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

A fast, safe, simple direct SQL executor for PG

Generated scopes for ActiveRecord classes.

Building APIs the way you want it.

Bit array for ActiveRecord

Amazon Redshift _makeshift_ adapter for ActiveRecord 5.

Enable ActiveRecord models to be handled as BiTemporal Data Model.

Adds various #where_assoc_* methods to ActiveRecord to make it easy to do correct conditions on the associations of the model being queried.

Extends your user model with friendships management methods

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

Create, manage, and send scheduled email sequences and drip campaigns from your Rails app.

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 like these. consistency_fail will find your missing unique indexes, so you can add them and stop ignoring the C in ACID.

Safe destroy for ActiveRecord.

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