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

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).

Bind a remote ActiveResource object to your local ActiveRecord objects, delegate attributes and optionally cache remote attributes locally.

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).

Hooch provides tools for common UI patterns without any dom or css. You build the html and css you want, then add data-attributes to get behavior. Keep behavior independent of look-and-feel and you can build "anything**"(** within reason).