Fairly low-level client library to access Google Analytics Feeds

As Puppet manifest files change, run puppet-lint on them

Easily create bots that can respond to anything!

Easy access and creation of "has many" relationships for ActiveRecord models. It uses a "vertical table" so schema changes aren't necessary when you add fields. Use this plugin to add preferences, options, flags, etc to your models

A rack app for monitoring application health that can be attached to your rails application

Tools to automate deployment to Heroku. Heroku is already automatic, but if you like to compile all your SASS and compress all your CSS&JS files before committing to Heroku, this tool is great for that

heroku_external_db lets you specify multiple databases using Heroku-style DATABASE_URL parameters, wire them up to different ActiveRecord configurations, and automatically configure it from the Rails environment. It also adds support for the :sslca configuration parameter so you can talk to external MySQL servers over SSL.

jruby wrapper for Esper (Stream Event Processing)

Runtime tracking of finite data sets

Ruby class to validate iban numbers

This gem allows you to Connect to a F5 appliance by means of its web services

Class that can read ISS log file and iterate over parsed log entries.

A simple lib for downloading pictures from web pages. It can get and parse page with different options and receive images from specified locations. It is possible to download images simultaneously in multiple threads or sequentially. In fact, it's picture downloader or picture grabber from web pages, which allows you to download photos (.jpg, .jpeg, .png, .gif, .ico, .svg, .bmp) and not only them.

Provides methods for indexing objects to Index Tank. Extra convenience methods included for Active Record objects.

Easily create PDF invoices

A library to watch the OS X pasteboard, and process/modify incoming pastes.

helper methods for generating markup, soon: javascript helpers

Run a block of code in multiple threads. Similar to threach, but with the ability to deal with breaks/exceptions (MRI can't because of unreliable timeouts).

Simple JSON formatting from your command line

Katana is a wrapper for the Heroku gem to make multi-environment deployments simple.