Guard::Motion automatically run your specs (much like autotest).

Guard::Pow automatically manage Pow applications restart

Guard::Resque automatically starts/stops/restarts resque worker

Ruby Critic is a tool that listens to modifications in Ruby classes, modules and methods and reports any new code smells it finds.

Guard::Spin automatically manage Spin server.

Guard-Teabag: Guard plugin for Teabag

Guard::Teaspoon automatically runs your Javascript tests with all the features of Teaspoon.

Guard plug-in that allows you to restart Unicorn

iTunes client with high level API

Ruby Wrapper for Klarna Checkout Rest API

Command line builders and executors.

Domain driven oriented microservice framework.

Web UI for MailyHerald - Email processing solution for Ruby on Rails applications

allows you to tag different Minitest tests with tags that can be used to filter tests

Optical mark recognition of multiple-choice tests and surveys. Low-level ruby library to generate response sheets in PDF form and to automatically score manually filled-out forms.

Rake tasks for managing Neo4j Tasks allow for starting, stopping, and configuring

Managing services lifecycle from Development to production using Vagrant and Puppet

Sequences need some love. pg_sequencer teaches Rails what sequences are, and will dump them to schema.rb, and also lets you create/drop sequences in migrations.

An example app using Vedeu.

Pry state lets you to see the values of the instance and local variables in a pry session