Sync users and groups from LDAP to PostgreSQL

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

Adds the ability to pull random records from ActiveRecord

A modern fast tagging framework for Rails 3.1+

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.)

Introspects your database string field maximum lengths and automatically defines length validations.

Recursively traverse trees using a single SQL query

This gem enables your model to query the database using the earthdistance extension. This should be much faster than using trigonometry functions over standart indexs.

Rescue from MySQL and Sqlite duplicate errors

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.

An opinionated web framework build on web standards

integrated library system

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

https://github.com/tsukasaoishi/fresh_connection

Another business actions architecture for Rails apps

Adds recurring jobs for Sidekiq

Store nested hashes and other types in ActiveRecord hstores

postgresql hstore parser/deparser - provides PgHstore.dump and PgHstore.load (aka parse)