Easy access and creation of "has many" relationships for ActiveRecord models. It uses a "vertical table" so schema changes aren't necessary when you add fields. Use this plugin to add preferences, options, flags, etc to your models

Gem for and Rails3 to easily handle enumeration attributes in ActiveRecord's models

An Active Model validator that uses the face.com API to ensures an image contains a face

Hashdown

Store ActiveRecord IDs non-obviously in URL using hashids.

Implémentation graphique du jeu du Hashi en gtk3

Allow addition of custom 'magic' columns to ActiveRecord models.

Simple replacement for has_many_polymorphs

Moderated fields or whole model instances are serialized and saved into a separate moderations table. The moderation can then be accepted and the changes will be applied to the model. This way, lookups for existing, accepted fields or entries will be much faster than if using something like Papertrail, since the changes that have not yet been accepted are stored outside of the model table - in the moderations table.

has_normalized_attributes is a Ruby on Rails gem that lets you normalize user data for an improved user experience. It takes the messy user inputed data and normalizes it into a nice clean standard format.

Keep specified associations in sync with ease using async reindexing (searchkick gem is required).

Uses Chronic to parse incoming dates and does not raise errors on invalid multi parameter settings

Easily track streaks on your ActiveRecord models.

Generates a unique slug for use as a drop-in replacement for ids.

vCard like contact and address models and helpers for Rails.

seed util (convert excel to yaml and insert yaml to db)

Ruby library for image galleries generation.

New Relic (on Heroku) currently reports queue times as queuing at the router level. The goal of this gem is to provide new relic with the proper queueing time for requests, which takes into account queue time at the dyno level.

This adds a lab interface to the OpenMRS compatible core API provided by [HIS-EMR-API](https://github.com/EGPAFMalawiHIS/HIS-EMR-API).

A persistence library based more closely on the repository model. Used in production for several years.