OJAgent is a client to submit solutions and query status at different online judges. It provides a uniformed interface to a lot of famous online judges.

A simple gem that fetches trending article about developer's life on OKKY

CLI tool to view On-Line Document for contained objects.

Much longer explanation of the example!

oncoursesystems.com's interface is very tedious to work with in a lot of cases, this gem uses mechanize to scrape and post lessonplan data

A screen-scraper to retrieve your cards and transactions from the Opal Card website

Find documentation here: https://github.com/leandrosardi/openai-scraper

A Ruby library for exporting Facebook Open Graph Translations between Developer Applications.

A set of classes for dealing with options. It includes a crawler for Yahoo!Finance.

Dumps information about your ORCA card. ORCA cards are Western Washington's all-in-one transit smart card that allow travel via bus, train and ferry throughout King, Kitsap, Snohomish and Pierce counties.

A command line tool to download data from the Oregon Secretary of State website (http://sos.oregon.gov/Pages/default.aspx). Uses mechanize gem to post search requests to the website and download excel files.

Simple OZON parser

An API to scrap pages on the web and to extract selected links from it.

Set of libraries and command-line tools to make better use of PagerDuty.

Grab pagespeed results from external services to use them in e.g. munin.

Panner pans for website gold.

Provides a web scraping library to interact with the ParentVUE website

PokerAffiliateSupport api querying via ruby

it's easy to crack password by dict

A small gem to help with scraping the Penny Arcade Expo website.