A modern fast tagging framework for Rails 3.1+

Better support for legacy database schemas for ActiveRecord, such as columns named class, or any other name that conflicts with an instance method of ActiveRecord.

Provides an internal extension API to ActiveRecord, in the form of middleware-style callback stacks

Allows Sequel to use ActiveRecord connection for database interaction.

A smart sms verification tool

State machine that allows dynamic transitions for business workflows

Sharding

Rails way to harness the power of SQL "EXISTS" statement

Subscribe to changes on ActiveRecord models

ActiveRecord/Rails Integration for the Workflow library. Workflow is a finite-state-machine-inspired API for modeling and interacting with what we tend to refer to as 'workflow'.

A smart sms verification tool

A streamlined, production-focused toolkit for building MCP servers in Rails applications. Provides essential base classes, authentication gateways, and HTTP transport with minimal dependencies.

Making object from any hash or hash array

Simulate multi-table inheritance for activerecord models using a polymorphic association

Cursor-based pagination for ActiveRecord.

Recursively traverse trees using a single SQL query

ActiveRecord Stand-alone migrations

Awesome patches backported for ActiveRecord MySQL adapters

MySQL index hint support for ActiveRecord

N+1 count query killer for ActiveRecord