Mâché provides helps you to write cleaner and more expressive acceptance tests for your web applications using page objects.

Why another static site generator? Machined is for the developers who know and love the asset pipeline of Rails 3.1 and want to develop blazingly fast static websites. It's built from the ground up using Sprockets 2.0.

A collection of useful patterns we (Springer Nature) use in our Ruby applications.

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 t...

Rails system mail management solution.

Style and linting configuration for ManageIQ projects.

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 ...

{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</...

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

Merb. Pocket rocket web framework.

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

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

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.