RecordWithOperator is a rails plugin that makes your all active record models to be saved or logically deleted with created_by, updated_by, deleted_by automatically. Also it makes creator, updater, deleter association (belongs_to) if the class has created_by, updated_by, deleted_by.

Positionless model sorting for Rails.

A Rails gem to automate and customize database seeding for ActiveRecord models, using Faker and configurable YAML files.

Allows Sequel to use ActiveRecord connection for database interaction.

Setler is a Gem that lets one easily implement the "Feature Flags" pattern, or add settings to individual models. This is a cleanroom implementation of what the 'rails-settings' gem does. It's been forked all over the place, and my favorite version of it doesn't have any tests and doesn't work with settings associated with models.

Super simple slugs for ActiveRecord 3.0 and higher, with support for slug history

Stateful workflow modeling for Rails

This gem provides asynchronous indexing to Solr for the sunspot gem. It uses a pluggable model for the backing queue and provides support for ActiveRecord, DataMapper, and MongoDB out of the box.

Tenacity provides a database client independent way of specifying simple relationships between models backed by different databases.

Manage delta indexes via Resque for Thinking Sphinx

types_from_serializers helps you by automatically generating TypeScript interfaces for your JSON serializers, allowing you typecheck your frontend code to ship fast and with confidence.

ULID for Rails

Skip default_scope in your associations

Introspects your database string field maximum lengths and automatically defines length validations.

Add some nice ActiveModel/ActiveRecord validators.

ActionSubscriber is a DSL that allows a rails app to consume messages from a RabbitMQ broker.

Gem that allows to attach dynamic attributes to ActiveRecord model

activejob-cancel provides cancel method to Active Job

Exposes a bulk insert API to AR subclasses

Colorized SQL Logging Backport for ActiveRecord. See http://git.io/vmlOb