table-for is a table builder for an array of objects, easily allowing overriding of how any aspect of the table is generated

A simple database agnostic import/export app to transfer data to/from a remote database. Taps-taps includes fixes submitted by the community.

A highly flexible mountable Rails CMS built for rapid application development.

Creates temporary files and directories for testing.

An opinionated browser testing framework

Trinidad init service scripts on Apache Commons Daemon and JRuby-Jsvc, compatible with Unix and Windows services

A gem by TaxJar that can be used to validate VAT IDs

A Rails engine supporting discovery of web archives.

Uses weasyprint to create PDFs using HTML

Create snapshot of webpage

Lets you use the Workflow gem with your Mongoid documents to add state machine functionality.

WWW::Delicious is a del.icio.us API client implemented in Ruby. It provides access to all available del.icio.us API queries and returns the original XML response as a friendly Ruby object.

Provides access to every endpoint of the XING API. Takes care of oauth, reponse parsing and simplifies error handling. You can get the required consumer_key and consumer_secret at https://dev.xing.com

ZeroPush is a simple service for sending iOS push notifications. (http://zeropush.com)

A complete Ruby API for handling SMS messages via 4info.com

Sending commands to a small thermal printer

Adapter to interact with various ACH service providers

Poker classes and constants that conform to the standards of the Annual Computer Poker Competition.

ActionSmser == SMS && ActionMailer. Simple way to use SMS (Short Message Service) in the same way as ActionMailer. Includes also delivery reports and easy way to add custom gateways (simple http and nexmo by default).

You can use active_cart as the basis of a shopping cart system. It's not a shopping cart application - it's a shopping cart framework.