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

Auto-create models, views, controllers, and routes with this slick Rails extension

Download, pull out of a ZIP/TAR/GZ/BZ2 archive, parse, correct, and import XLS, ODS, XML, CSV, HTML, etc. into your ActiveRecord models. Uses Upsert internally for speed.

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

Safe destroy for ActiveRecord.

Ruby workflow/orchestration engine

SQL input/output plugin for Fluentd event collector

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

Provides support for using versioning gems such as PaperTrail with Globalize.

Referencing code in app/ from a database migration risks breaking the migration when your app code changes; this gem prevents that mistake

Adds group and membership functionality to Rails models

Adds typed hstore backed fields to an ActiveRecord model (FORK).

fork of hstore accessor that supports rails 5 .

Shield sensitive data in Postgres and MySQL

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

A faster, lower-memory, fuller-featured querying API for ActiveRecord that returns results as unadorned, read-only objects.

#set(), speed-up your specs

Provides enhancements to ActiveRecord to handle spatial datatypes in PostgreSQL and MySQL.

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

Search object DSL