The Rubyist's interface to Ncurses.

A LibSVM based support vector machine classifier for Ruby.

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.

Calculate the entropy of data

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

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.

A test helper that makes it simple to test HTTP interaction

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.

TAn implementation of a Floating Average Z-Score algorithmic method for use in identifying trends with historical data.

"A gem that uses the Google Places API to find the Location of your machine and returns with the name of all places matching the search type"

APN on Rails is a Ruby on Rails gem that allows you to easily add Apple Push Notification (iPhone) support to your Rails application. This version includes an association between an assumed User model and APN::Device

I got sick of doing this test in interviews, so next time someone asks me to do so, I'm going to instead hand them a business card with a URL for this gem on it.

Tired of repeating 'validates_format_of' with the same regex expression across your models only to validate the same email address and postal code fields? So am I. Use format_for_extensions to dynamically define reusable formats for any ActiveRecord model attribute you want.

Find rational approximation to given real number. Based on the theory of continued fractions if x = a1 + 1/(a2 + 1/(a3 + 1/(a4 + ...))) then best approximation is found by truncating this series (with some adjustments in the last term). Note the fraction can be recovered as the first column of the matrix ( a1 1 ) ( a2 1 ) ( a3 1 ) ... ( 1 0 ) ( 1 0 ) ( 1 0 ) Instead of keeping the sequence of continued fraction terms, we just keep the last partial product of these matrices.

Shows cute notifications in frontend. No need to manually create your own html/css/js to show Rails's flash[:notice] or other flashes. This handles it nicely + you can customize it.

Provides Ruby bindings to interact with a Cobbler server.

Identify and remove old gems

RSpec 2 library to facilitate creating generator specs