For tasks that can be started early and evaluated late. Typically one might want start multiple heavy tasks concurrent. This is already solvable with threads or the [reactor-pattern](http://rubyeventmachine.com/) but setting this up could be cumbersome or require direct interactions with threads ex. Dunder is a simple way of abstracting this: you simply pass a block to Dunder.load with the expected class as the argument

Methods to get and build models directly from parameters. Useful for DRYing up code, specifically very dynamic code for things like admin tools.

An earth-simulation environment with ActiveRecord models and data

This gem is a more featureful but still drop-in replacement for eassl 0.1.1643

Ported from ec2-consistent-snapshot (http://alestic.com/2009/09/ec2-consistent-snapshot)

Provides a simple way to rotate EC2 snapshots with configurable retention periods.

A LibSVM based support vector machine classifier for Ruby.

email helpers

Sequenced file reader and writer through EventMachine. Solves problem of blocking disk IO when operating with large files.

Gives face to your text.

Uses the Endicia API to create USPS postage labels. Requires account id, partner id, and passphrase. Exports to a variety of image types.

A gem for Ruby on Rails 3 that adds an engine generator for easy code extension

Turn your rails 3 app into an embeddable engine gem, with answers for db migrations, static assets and more.

View helpers 'header' and 'footer', along with an assets generator to make any site look like http://engineyard.com

Enables Active Record attributes to point to enum like objects, by saving in your database only an integer ID.

Allows ActiveRecord to better use PostgreSQL's ENUM types.

Ephemeral lets you define one-to-many relationships between in-memory objects, with ORM-like support for where clauses and chainable scopes.

Generates a template directory that you can use to build a custom epub. After customizing templates, use bin/gen_epub.rb to create and validate an epub archive.

Erector is a Builder-like view framework, inspired by Markaby but overcoming some of its flaws. In Erector all views are objects, not template files, which allows the full power of object-oriented programming (inheritance, modular decomposition, encapsulation) in views.

Errship is a Rails 3.1 engine for rendering error pages inside your layout. It supports i18n, custom exceptions, and Airbrake (Hoptoad) error tracking.