A suite of tools for inspecting, interfacing and working with MagLev. It consists of a number of Rack middlewares to record runtime information in the stone, an associated set of Sinatra middlewares for exposing said information through a JSON interface, and a number of Sinatra web-applications that take advantage of that interface to build a few simple browser-based development tools.

Rails system mail management solution.

Mainline is a rails plugin which exposes your rails app via webrick to allow testing with browser automators such as Selenium or Watir. Mainline allows your rails actions to run in the same transaction as your unit tests so you can use fixtures, factories, or whatever.

Marley is a framework for quickly building RESTful web services and applications. Development is fast for two reasons: Marley implements lots of sensible defaults, all of which can be overridden and most of which can be overridden easily. And Marley servers exchange only data and metadata with clients.

{Marlowe}[https://github.com/KineticCafe/marlowe] is a Rack middleware that extracts or creates a request ID using a pre-defined header, permitting request correlation across multiple services. When using Rails, Marlowe automatically adds itself to the middleware before <tt>Rails::Rack::Logger</tt>. As of Marlowe 3.0, a Faraday middleware is provided (<tt>require 'marlowe/faraday'</tt>).

Massimo builds HTML, Javascript, and CSS Files from your source.

Merb. Pocket rocket web framework.

Messiah enables using Ruby testing tools for integration testing with platforms that support CGI. Notably, PHP.

So meta

Write micro services in Ruby for the Micro framework

A Ruby gem for faking external web services for testing

Simple wrapper for Graphite and Statsd

mmunicode_rails lets you convert you rails app input data to Myanmar Unicode regardless of which fonts the users used.

Rails User Agent Dependent View Paths

Mock you're entire application

The Mocktopus is a Sinatra/thin-based Web API that lets you mock your app dependencies

The OpenAPI-driven web framework for Ruby.

mongoid plugins

A full library allowing you to create sexy DSLs to define your RPC-like APIs.

This gem contains a script to start a Unicorn-based server for your Rack application that reloads your automatically when they are changed, but doesn't incur the penalty of reloading all the gem dependencies. It's based on Jonathan D. Stott's blog post "Magical Reloading Sparkles"--hence the name.