What Is Under Your Hood?

So a while back everyone was "showing their gems", I liked the idea of seeing what others were using so I figured I would drop my trousers and expose my gems in a similar fashion.

actionmailer (1.3.2, 1.2.3)
    Service layer for easy email delivery and testing.

actionpack (1.13.2, 1.12.3)
    Web-flow and rendering framework putting the VC in MVC.

actionwebservice (1.2.2, 1.1.4)
    Web service support for Action Pack.

activerecord (1.15.2, 1.14.3)
    Implements the ActiveRecord pattern for ORM.

activesupport (1.4.1, 1.3.1)
    Support and utility classes used by the Rails framework.

activewarehouse (0.2.0)
    Build data warehouses with Rails.

BlueCloth (1.0.0)
    BlueCloth is a Ruby implementation of Markdown, a text-to-HTML
    conversion tool for web writers. Markdown allows you to write using
    an easy-to-read, easy-to-write plain text format, then convert it to
    structurally valid XHTML (or HTML).

builder (2.0.0)
    Builders for MarkUp.

capistrano (1.2.0)
    Capistrano is a framework and utility for executing commands in
    parallel on multiple remote machines, via SSH. The primary goal is
    to simplify and automate the deployment of web applications.

color-tools (1.3.0)
    color-tools provides colour space definition and manpiulation as
    well as commonly named RGB colours.

daemons (0.4.4)
    A toolkit to create and control daemons in different ways

fastercsv (0.2.1)
    FasterCSV is CSV, but faster, smaller, and cleaner.

gem_plugin (0.2.1)
    A plugin system based only on rubygems that uses dependencies only

mailfactory (1.2.3)
    MailFactory is a pure-ruby MIME mail generator

mime-types (1.15)
    Manages a MIME Content-Type that will return the Content-Type for a
    given filename.

money (1.7.1)
    Class aiding in the handling of Money.

mongrel (0.3.13.3)
    A small fast HTTP library and server that runs Rails, Camping, and
    Nitro apps.

needle (1.3.0)
    Needle is a Dependency Injection/Inversion of Control container for
    Ruby. It supports both type-2 (setter) and type-3 (constructor)
    injection. It takes advantage of the dynamic nature of Ruby to
    provide a rich and flexible approach to injecting dependencies.

net-sftp (1.1.0)
    Net::SFTP is a pure-Ruby implementation of the SFTP client protocol.

net-ssh (1.0.10)
    Net::SSH is a pure-Ruby implementation of the SSH2 client protocol.

pdf-writer (1.1.3)
    A pure Ruby PDF document creation library.

piston (1.1.1)
    Piston is a utility that enables merge tracking of remote
    repositories.

postgres-pr (0.4.0)
    A pure Ruby interface to the PostgreSQL (>= 7.4) database

rails (1.2.2, 1.1.4)
    Web-application framework with template engine, control-flow layer,
    and ORM.

rails_sql_views (0.5.1)
    Adds SQL Views to Rails.

rake (0.7.1)
    Ruby based make-like utility.

rami (0.4)
    A proxy server/client api for the Asterisk Manager Interface

rcov (0.7.0.1)
    Code coverage analysis tool for Ruby

RedCloth (3.0.4)
    RedCloth is a module for using Textile and Markdown in Ruby. Textile
    and Markdown are text formats.  A very simple text format. Another
    stab at making readable text that can be converted to HTML.

ruby-openid (1.1.4)
    A library for consuming and serving OpenID identities.

ruby-yadis (0.3.4)
    A library for performing Yadis service discovery

ruport (0.6.0)
    A generalized Ruby report generation and templating engine.

scruffy (0.2.2)
    A powerful, clean graphing library for Ruby.

sources (0.0.1)
    This package provides download sources for remote gem installation

transaction-simple (1.3.0)
    Simple object transaction support for Ruby.

vpim (0.360)
    iCalendar and vCard support for ruby