Rucola is an extension for RubyCocoa. It has a application skeleton generator and builds an "opinionated" application layout, like the one known from rails. And comes with RubyCocoa specific rake tasks.

Recursively traverses data structures (Hash & Array currently)

Gadu Gadu protocol client implementation in Ruby language

Roku™ set-top box remote control, command line and web interfaces

Allows you to define a set of 'rules' or dynamic methods to apply to a class.

Ruler module implements a DSL that makes it easy to write a set of facts and rules. If you have some tricky conditional logic, Ruler can help clear it up.

Rack middleware for connecting Rack applications to rules.io, with extensions for Rails 3 applications.

A simple UML Grapher for Rails objects

DEPRECATED - Mediator for apps that want their content to be in the search index

Rumor

runcoderun command line gem

Is the local client to the puppet_controller

A library for Ruote processes, based on FS storage and sub-processes

Rupert allows to manipulate RPM files independently from availability of rpmlib.

Easy tar-based backups to S3, with backup rotation, cleanup helpers, and pre-/post-backup hooks.

Simple logging to S3

An EventMachine based client for S3 compatible APIs

An EventMachine based client for S3 compatible APIs

Safety Razor - A Ruby client for the Razor API.

Encryption in Ruby to interface with SagePay's payment gateway protocol v3.