Attach comments to your ActiveRecord queries.

Log all changes to your ActiveRecord models

Find a needle in a haystack using string similarity and (optionally) regexp rules. Replaces loose_tight_dictionary.

An awesome nested set implementation for Active Record

Clearance is built to support authentication and authorization via an email/password sign-in mechanism in applications. It provides some core classes commonly used for these features, along with some opinionated defaults - but is intended to be easy to override.

ActiveRecord backend for Delayed::Job, originally authored by Tobias Lütke

Rails I18n de-facto standard library for ActiveRecord model/data translation.

Library for validating urls in Rails.

This gem allows you to use sharded databases with ActiveRecord. This also provides a interface for replication and for running migrations with multiples shards.

A resource-centric approach to implementing the controllers, routes, and serializers needed to support the JSON API spec.

Shrine is a toolkit for file attachments in Ruby applications. It supports uploading, downloading, processing and deleting IO objects, backed by various storage engines. It uses efficient streaming for low memory usage. Shrine comes with a high-level interface for attaching uploaded files to database records, saving their location and metadata to a database column, and tying them to record's lifecycle. It natively supports background jobs and direct uploads for fully asynchronous user experience.

Easy activity tracking for your ActiveRecord models. Provides Activity model with details about actions performed by your users, like adding comments, responding etc.

XML serialization for your Active Model objects and Active Record models - extracted from Rails

Apartment allows Rack applications to deal with database multitenancy through ActiveRecord

Strategies for cleaning databases using ActiveRecord. Can be used to ensure a clean state for testing.

A simple, fast, memory-efficient and threadsafe implementation of GetText

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.

Some [hopefully] useful extensions to Ruby's String class. Stringex is made up of three libraries: ActsAsUrl [permalink solution with better character translation], Unidecoder [Unicode to ASCII transliteration], and StringExtensions [miscellaneous helper methods for the String class].

An Action Dispatch session store backed by an Active Record class.

Tire is a Ruby client for the Elasticsearch search engine/database. It provides Ruby-like API for fluent communication with the Elasticsearch server and blends with ActiveModel class for convenient usage in Rails applications. It allows to delete and create indices, define mapping for them, supports the bulk API, and presents an easy-to-use DSL for constructing your queries. It has full ActiveRecord/ActiveModel compatibility, allowing you to index your models (incrementally upon saving, or in bulk), searching and paginating the results. Please check the documentation at <http://karmi.github.com/retire/>.