Quick 'n dirty histograms.

Provides HMAC authentication to your Rails controllers

A generic Rails Engine that all HS-* post type publisher apps build on top of.

A drop-in PubSubHubBub-compliant Rails Engine for easy hubbubing.

HumanDetector is a friendly logic captcha for Rails the doesn't require any external system dependency (e.g. external captcha API connections). It uses a simple question that any 7 or more years old human can understand, but that a spambot will not be able to answer. This Gem supports Ruby v1.9.2 and Rails 3.0.x.

Hydra-File-Access is a plugin Rails Engine containing the code for manipulating files in a Hydra application. The full hydra stack includes: Blacklight, Fedora, Solr, active-fedora, solrizer, and om

An awesome admin solution for Rails

HyperMesh gives your HyperReact components CRUD access to your ActiveRecord models on the client, using the the standard ActiveRecord API. HyperMesh also implements push notifications (via a number of possible technologies) so changes to records on the server are dynamically updated on all authorised clients.

Hyrax Preservation provides models for storing and searching for preservation metadata.

Description of I18nHelper.

Idioma is a gem for managing translations through an interface. Translations are saved in Postgres and can be persisted to Redis.

Provides secondary authentication by asking the user to select their chosen images

A rails engine to serve imageviewer js files easily and ubiquitiously

Imparavi wysiwyg editor for Rails 3.1+

Data entity importer for Ruby and asynchronous handling wrapped around activerecord-import and featured by valium and state_machine.

Full Stack rails engine for xls import to activerecord, with process notification through websockets, and activeadmin integration, works with rails 4.0.+.

Messaging system for Rails 3 app

A rich indexed search engine for Rails written in pure Ruby.

Manage your FactoryGirl for create a unique instance of model associations and integrate with rspec

Instant-upload is simply ajax upload for rails (with carrierwave).