RabbitMq client library support both publish and subscribe use cases.

If you want to just get up and going in making your rails app into a producer or consumer of RabbitMQ events then use this gem

Rabl generators for Rails resources

This project provides a Ruby-based Diagram to enable game designers to design and also test tentative game designs and/or prototypes

A rack middleware that collects access statistics and saves them on a MongoDB database.

Only permit requests that originate from an authorised reverse proxy

rack-banken is rack application for return error response.

A Rack App that provides a basic interactive Ruby console and introspection.

Automatically generate REST APIs for Core Data models.

Rack middleware for OAuth2 Provider Server Based on Couchdb

Rack middleware to log in from a "remember me" Devise cookie.

A middleware to process wrong encoded URLs in Rack applications.

Rails aware Rack middleware for Entra ID authentication.

Provides the ability to inspect your backend Faraday requests via a web UI.

Rack middleware generator

Load gists in the background. KTHXBYE!

A port of has_global_session to Rack middleware.

Restricts requests to specific IP addresses and ranges for specified paths

Structured, key-value logging for your rack apps. Inspired by lograge.

Rack logger support ActiveSupport LogSubscriber