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.

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.

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.

Manage VMWare ESX hosts with ease

Provides basic event management features with versioned history of changes.

A tool for converting delicious bookmarks (HTML file) to Evernote format (ENEX file). The delicious HTML file can be exported from del.icio.us. The generated ENEX file can be imported into Evernote using the official desktop Evernote client.

Enables easy table rendering in rails applications

A framework for building analytical models in Ruby and supporting systems. This is meant to be a flexible tool for many kinds of models, and should grow gently over time.

Provides a nice DSL to describe your CSV document. CSV documents can be validated against this description. You can easily define types like Integer or Array for CSV through converters.