Give your models as-of date temporal extensions. Built entirely for PostgreSQL >= 9.4

Tracking exceptions for Rails application store them in database by exception_notification gem.

Ferry is a data migration and visualization command line tool rubygem that seeks to simplify the increasingly prevalent big data problems for developers

hydra_attribute is an implementation of EAV pattern for ActiveRecord models.

Organizes ActiveRecord models into a tree/hierarchy using a materialized path implementation based around PostgreSQL's ltree datatype. ltree's operators ensure that queries are fast and easily understood.

Ruby gem that automatically adds a lock timeout to all Active Record migrations

Store nested hashes and other types in ActiveRecord hstores

pg-eyeballs is a ruby gem that gives you detailed information about how the SQL queries created by the active record code you write are executed by the database. It gives you an easy, ruby friendly way to see the output of the Postgres EXPLAIN command and integrates with the popular query analysi...

Sync users and groups from LDAP to PostgreSQL

Amazon Redshift _makeshift_ adapter for ActiveRecord 4.

Adds missing native PostgreSQL data types to ActiveRecord and convenient querying extensions for ActiveRecord and Arel

A lightweight cron scheduler for the Que async job worker

This gem makes Rails console sessions less dangerous in specified environments by warning, color-coding, auto-sandboxing, and allowing read-only external connections (disables job queueing, non-GET requests, etc.)

Track what product being viewed, what being purchased. Who are consistant buyers etc.

Testcontainers makes it easy to create and clean up container-based dependencies for automated tests.

Add support to complex resources of PostgreSQL, like data types, array associations, auxiliary statements (CTE), and full-text search (FTS)

Rescue from MySQL and Sqlite duplicate errors

Add relational OLAP-like functionality for ActiveRecord

With Amountable, you can easily attach, organize and sum Ruby money fields to your models without migrating.

Extension for ActiveRecord that adds support for PostgreSQL array columns, mapping string values to integers.