MagicEnum is a simple ActiveRecord plugin that makes it easier to maintain ENUM-like attributes in your models.

Mailcheck.js for Rails'

Convert mail to a one line log message.

Tools to inspect and analyze Ruby's Marshal serialization format. Supports the Marshal 4.8 format which is emitted by ruby 1.8 through 2.x.

Ruby Marvel Comics API library

Explore the Marvel Universe like never before.

Send Mandrill template emails

Basic implementation of the Mastercoin protocol.

A CLI that provides a formatted and highlighted view of Markdown files in a terminal

A Ruby gem with a lot of distance measures for your projects.

Mechanize-Progressbar shows ProgressBar when HTTP GET access of Mechanize(Mechanize#get, Page::Link#click, response of Form#submit). It requires 'progressbar' gem. HTTP POST is not supported.

Messenger: easy message sending for various protocols.

Ruby API layer that transparently queries, scrapes and caches Metal Archives' website

A Smalltalk-like Method Finder for Ruby with some extra features

Automated deployment of your Middleman blog to Github Pages

A low-drama portfolio generator for your middleman site.

Use Pry as the Middleman console.

A collection of assertions for use with minitest and activerecord. Simplifies testing associations and validations by introspecting associations and validations for you models.

Ruby's contemporary test coverage tools all lie, exaggerating coverage through false-positives and creating a false sense of security; minitest-coverage tries to address this. Coverage Analysis Tools rely on tracing facilities built into ruby’s VM. You run your tests, and collect data. Seems sim...

minitest/excludes.rb extends Minitest::Test to provide a clean API for excluding certain tests you don't want to run under certain conditions.