RabbitMQ's access control capabilities are rather limited. RabbitCage enables fine-grained permission setups, you define which user can perform which AMQP method on which class.

Simple multi-agent framework. It uses AMQP for it's messaging layer.

An orchestrator for describing and building entire systems with Chef

Provides the Consumer part of the Untied gem.

Provides the Publisher part of the Untied gem.

A wrapper around the AMQP gem to support easy messaging between applications.

Collection of modules that aid in setting up AMQP producers and consumers.

Distributed Events/RPC system using AMQP as a transport (pre-alpha)

Simple helpers to achieve various AMQP tasks.

Command line AMQP consumer

A server that allows multiple users to view and program a shared Ruby-Processing sketch.

command line tools for AMQP/RabbitMQ

Asynchronous Service Stages for Distributed Services

Performs harvests on data sources and detects adds, changes and deletes.

SEOmoz Background Job Framework

Play/Manage RabbitMQ. Vhosts, queues.

Bunnicula is a simple AMQP relay implemented as a ruby daemon (a-la daemon-kit). Similar in intent to shovel, Bunnicula is intended to enable the common messaging scenario where services and applications publish messages to an AMQP broker on the local LAN for speed and reliability which are then subsequently relayed to a remote AMQP instance by a relay process which isn�t so irritable as message producers tend to be when it comes to network speed and reliability. Bunnicula can be configured via configuration file (a Ruby DSL) or, for most common configurations, through command line arguments.

Cloud Foundry auto-reconfiguration for Ruby

Cloud Foundry Runtime Library

Fancy messaging library for Ruby