Mozaic is an opinionated layout engine for Rails. It simplifies handling numerous layouts and components.

Mqttopia description

Rails Template Engine for MJML (Rust-variant called MRML)

Reusable components and Rails helpers on top of materialize-css and material-design-icons.

MUI is a lightweight framework that follows Google's Material Design guidelines

Migration support and some other relevant utilities implemented using ActiveRecord.

Multiple caches configuration for Ruby On Rails.

Multiple select jQuery plugin for Rails asset pipeline

Customized multiselect jQuery plugin for Rails asset pipeline

A Rails 3.1 Engine to include javascritp and css files from https://github.com/crdeutsch/multiselect

A Rails engine for municipal technology — service requests, permits, transit, and civic operations.

<p><code>mvcoffee-rails</code> is a Rails gem that makes it easy to use the <a href="https://github.com/kirkbowers/mvcoffee">MVCoffee</a> client-side MVC framework in your Rails project.</p> <p>The full documentation for this gem is at <a href="http://mvcoffee.org/mvcoffee-rails">mvcoffee.org</a>.</p>

MySQL constraints in migrations similiar to ActiveRecord validations

SQLite constraints in migrations similiar to ActiveRecord validations

A ruby gem that uses the Rails asset pipeline to include the jQuery MouseWheel Intent plugin by trixta.

Sensible front-end defaults for MxM Rails projects

The opinionated & modular state-of-the-web framework Myg integrated with Ruby on Rails.

MysqlGenius gives Rails apps a mountable performance dashboard for MySQL databases. Monitor slow queries, analyze query statistics from performance_schema, detect unused and duplicate indexes, and explore your database with optional AI-powered optimization.

Myth adapter for the Rails asset pipeline.

Quality components with semantic HTML, accessibility-first, native CSS nesting, and BEM naming. Zero runtime dependencies.