Simple tagging gem for Rails using postgres array.

Client Side Validations for Rails 2.x and 3.x

A Ruby on Rails plugin to add an after_commit callback. This can be used to trigger methods only after the entire transaction is complete.

Adds new features to Arel

Write-through and Read-through Cacheing for ActiveRecord

Deploy features incrementally to your users

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

Delayed is a multi-threaded, SQL-driven ActiveJob backend used at Betterment to process millions of background jobs per day. It supports postgres, mysql, and sqlite, and is designed to be Reliable (with co-transactional job enqueues and guaranteed, at-least-once execution), Scalable (with an opti...

Fast batch deletes for Active Record and Postgres

A malware/botnet analysis framework written in Ruby.

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

FortyFacets lets you easily build explorative search interfaces based on fields of your active_record models.

I18n date/number parsing/localization

Rails Driver and Adapter for IBM Data Servers: {DB2 on Linux/Unix/Windows, DB2 on zOS, DB2 on i5/OS, Informix (IDS)}

Preload ActiveRecord associations with graphql-batch

Rails I18n library for ActiveRecord model/data translation using PostgreSQL's JSONB datatype. Translations are stored directly in the model table rather than shadow tables.

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

never let an unscoped Model.all accidentally leak data to an unintended audience.

Extend Ruby on Rails ActiveRecord with Neo4j nodes. Keep RDBMS and utilize the power of Neo4j queries. Originally by @elado.