Jazz theory is a mathematical system of concepts and relationships, why not make an ActiveModel representation of those concepts?

Double entry bookkeeping with Rails

Let ActiveRecord serialize and cast your UUIDs to and from binary columns in your database.

An extension to paper_trail, using this you can fetch actual object who was responsible for this change

Adds the validates_uniqueness_without_deleted validator to ignore deleted fields when validating for uniqueness.

Organize ActiveRecord model into a tree structure using PostgreSQL LTree

pluto-models - planet schema 'n' models for easy (re)use

PunchingBag is a hit counting and simple trending engine for Ruby on Rails

This library is an implementation of cursor pagination for ActiveRecord relations. Where a regular limit & offset pagination has issues with items that are being deleted from or added to the collection on previous pages, cursor pagination will continue to offer a stable set regardless of changes to the base relation.

Properties gem for Ruby on Rails

Real stubs and spies for HTTP(S) services

Adds shorthands and conveniences to ActiveRecord's handling of indexes

Allows Sequel to use ActiveRecord connection for database interaction.

ActiveRecord extension. Allows to save record without calling callbacks and validations.

Explicit soft deletion for ActiveRecord via deleted_at and default scope.

Common tools and helpers for Spree Extensions developers

Enable using native sql enums

It makes working with pure SQL easier with syntax highlighting. Let's you clean your Ruby code from SQL strings.

Read from stand-by databases for ActiveRecord

Background search indexing using existing worker systems.