Invitable

If you have a model (User, Account, etc..) and you only want invited people to be allowed creating those resource. Good example is while in beta, invite only account creation.

A Light weight invitation system for Ruby on Rails.

A magic for life developer.

This is a framework for generating and displaying invoices (ideal for commercial Rails apps). It allows for flexible business logic; provides tools for tax handling, commission calculation etc. It aims to be both developer-friendly and accountant-friendly.

An XML-RPC Client for the API of INWX.

API access to Inxmail

Ruby script to extract iOS backups.

IP address - integer conversion and activerecord support for ip attribute as integer column

A gem to integrate the IPligence database in ruby

Iptables DNAT manager

An irc bot framework that offers easy-to-use by plugins

iron_cuke provides a set of steps and Cucumber world objects you can use to simulate IronWorker while running cucumber tests.

Adds enumerated constant value support to Ruby and Rails projects

Add i18n and some more magick to the responses with respond_with

Adds wiki functionality. Based on http://github.com/alno/irwi.

Rails extension

Transform database constraint errors into activerecord validation errors

Description of Isaca::Rails.

Simple gem to reduce the spam attacks on sign-up, sign-in and other similar sorts of forms.