Rack provides a minimal, modular and adaptable interface for developing web applications in Ruby. By wrapping HTTP requests and responses in the simplest way possible, it unifies and distills the API for web servers, web frameworks, and software in between (the so-called middleware) into a single method call. Also see https://rack.github.io/.

Ruby on Rails is a full-stack web framework optimized for programmer happiness and sustainable productivity. It encourages beautiful code by favoring convention over configuration.

Sinatra is a DSL for quickly creating web applications in Ruby with minimal effort.

The Godfather of Sinatra provides a full-stack agnostic framework on top of Sinatra

Routing tree web toolkit

The web app builder for Rails

Cuba is a microframework for web applications.

Merb. Pocket rocket web framework.

Ramaze is a simple and modular web framework

Hanami is a web framework for Ruby

A bliki-type web content thing.

minature rails for stay-at-home moms

Strelka is a framework for creating and deploying Mongrel2[http://mongrel2.org/] web applications in Ruby. It's named after a lesser known {Russian cosmonaut}[http://en.wikipedia.org/wiki/Strelka_(dog)#Belka_and_Strelka] who was one of the first canine space travelers to orbit the Earth and return alive. Her name means "little arrow".

Cramp is a framework for developing asynchronous web applications.

Rango is ultralightweight, ultracustomizable, ultracool web framework deeply inspired by Django.

The Plezi.io Ruby Framework for real time web applications.

A microframework built on Rack.

A light-weight Sinatra-inspired web framework for web sites and applications of any size.

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.

Scalable Framework aimed at Speed and Simplicity

The super-friendly web framework.

Modern web framework for Ruby

Gin is a small Ruby web framework, built on Rack, which borrows from Sinatra expressiveness, and targets larger applications.

A concurrent realtime web framework for Ruby

Harbor Framework

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