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.

Vagrant is a tool for building and distributing virtualized development environments.

Easy upload management for ActiveRecord

Even delivering email to the local machine may take too long when you have to send hundreds of messages. ar_mailer allows you to store messages into the database for later delivery by a separate process, ar_sendmail.

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.

Sailthru Client with Batching

Implements ActionMailer compatible syntax