A framework for creating e-books from Markdown using Ruby. Using the Prince PDF generator, you'll be able to get high quality PDFs. Also supports EPUB, Mobi, Text and HTML generation.

Lita adapter for Slack.

Transactional Mailer for Mandrill

Extract the dominant colors from an image.

This gem provides a Ruby API to the Nexpose vulnerability management product by Rapid7.

Show progress of long running tasks

This gem is a wrapper to send push notifications to devices. Currently it only sends to Android or iOS devices, but more platforms will be added soon. With APNS (Apple Push Notifications Service) you can send push notifications to Apple devices. With GCM (Google Cloud Messaging) you can send push notifications to Android devices.

Insert LiveReload into your app easily as Rack middleware

Implements a distributed semaphore or mutex using Redis.

Ruby gem to merge Cucumber JSON reports and build mobile-friendly HTML Test Report, JSON report and retry file.

Helps to make POST 'redirect', but actually builds [form] with method: :post under the hood

Contains facts from many Facter version on many Operating Systems

Adding snapshot testing to RSpec

RSpec matcher to control SQL queries made by block of code

Ruby/Rsync is a Ruby library that can syncronize files between remote hosts by wrapping a call to the rsync binary.

A ruby interactive dependency graph visualizer

A linter and static code analysis tool for Ruby.

Ruby compiler and runtime for the google protocol buffers library.

Sandi Metz rules checker

Entropy-based password strength checking for Ruby and ActiveModel