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

Add some nice ActiveModel/ActiveRecord validators.

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

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

ActiveRecordDistinctOn adds support for `DISTINCT ON` to ActiveRecord. At the time of this writing, PostgreSQL is the only database which supports this syntax; however, this gem has been written with database independence in mind so that if another Arel visitor adds support for `Arel::Nodes::DistinctOn` in the future, it should work seamlessly.

Provides transparent encryption for ActiveRecord. You can protect your data with any encryption algorithm you want.

An ActiveRecord extension providing convenience methods for timestamp management.

ActiveRecord Firebird Adapter for Rails 3 and 4 with support for migrations.

Save unnecessary round trips to the database

Use PostgreSQL JSONB fields to store association information of your models

Gives ActiveRecord support for PostgreSQL's native inherited tables

ActiveRecord connection adapter for MySQL. It is based on the stock MySQL adapter, and adds built-in support for the spatial extensions provided by MySQL. It uses the RGeo library to represent spatial data in Ruby.

Support for Postgres Notify/Listen

This gem allows automatic connection switching between a primary and one read replica database in ActiveRecord. It pattern matches the SQL statement being sent to decide whether it should go to the replica (SELECT) or the primary (INSERT, UPDATE, DELETE).