Queues system for AR/Rails based on PgQ Skytools for PostgreSQL, like Resque on Redis. Rails 2.3 and 3 compatible.

A comprehensive PostgreSQL monitoring and analysis library that provides insights into query performance, index usage, table statistics, and more. Includes a beautiful web dashboard and Telegram notifications.

Pipeline is a Rails plugin/gem to run asynchronous processes in a configurable pipeline.

Polo travels through your database and creates sample snapshots so you can work with real world data in development.

Provides a database-friendly method for polymorphic relationships

Choose per model and/or controller&action whether a read-only query should be sent to master or a hot standby. Or just use Postamt.on(:slave) { ... }.

Adds helpers to migrations and dumps check constraints to schema.rb

Uses Postgres's powerful COPY command to upsert large sets of data into ActiveRecord tables

Adds support for CTEs for PostgreSQL and ActiveRecord

Thin ActiveRecord Redshift Adapter extension for existing PostgreSQL adapter.

Ruby/Rails DSL for Prediction.io, an open source machine learning server.

Predictive loader

Preload association or scope counts. This can greatly reduce the number of queries you have to perform and thus yield great performance gains.

ActiveRecord plugin to prevent destroy when associations are present

Super simple way to store prices

Define and enforce pricing plan limits in your Rails SaaS (entitlements, quotas, feature gating). pricing_plans acts as your single source of truth for pricing plans. Define a pricing catalog with feature gating, persistent caps, per‑period allowances, grace periods, and get view/controller/model...

Procore Ruby Gem

Runs regular Rails/ActiveRecord migrations via the Percona Toolkit pt-online-schema-change tool.

APNS support for the modular push daemon.

Adds callback hooks for your ActiveModel models for sending messages to a Pusher channel.