The WeTube gem was constructed to communicate with various API services in the gSchool service-oriented design project.

Ruby SDK for working with TNT shipping web services.

Wherewolf allows you to consume search terms as strings without worrying about database injections. It parses the query and converts it into ARel. It's great for creating filterable REST APIs.

Organise background tasks so they will not overload the machine(s) running the tasks, while still giving a fair, balanced allocation of running time to members in the queue

It help when you need to create some shell script with Ruby.

Reusable Omniauth integration for Devise supporting multiple providers. Essentially takes the how-to setup in the devise wiki for facebook and other providers and gives you code in your application to get started with.

Set of sort and filter helpers

Sorts gemfiles based on name, group, and source

API for http://stockfighter.io. Run bin/console and start playing!

keisanjaku is a Ruby terminal slide rule simulator with sandbox, demo, and drill modes.

Library for lexical sorting in various languages.

This gem simplifies subscribing a user to a given recurring plan using Stripe API.

PIC is a pattern matching library, like regular expressions, based on Cobol edited pictures. It's advantage over regular expressions is it more concise syntax which geared specifically toward validation of user input.

Enables sending simple emails to app owners. Wraps [Leadersend](http://www.leadersend.com) mail delivery service and defines a DevelopmentNotification::Email model for logging.

Use webtagger to use keyword extraction web services (yahoo, tagthe and alchemy) to extract from a text terms suitable for tagging, summarization, query building, etc.

Defines abstractions that can be built on top of for key/value storage on different technologies (file, s3, sql, redis, etc.)

Scrapes and prints top-selling video games on Steam

kj is a simple rubygem for accessing the King James Bible. It uses an embedded sqlite data store.

Command line utility for running a web server for static files with basic authentication support

Haml-bootstrap-rails provides Haml generators for Rails 3 with twitter bootstrap support. It also enables Haml as the templating engine for you, so you don't have to screw around in your own application.rb when your Gemfile already clearly indicated what templating engine you have installed. Hurrah.