JRuby-Rack is a combined Java and Ruby library that adapts the Java Servlet API to Rack. For JRuby only.

This middleware acts as a spam trap. It inserts, into every outputted <form>, a text field that a spambot will really want to fill in, but is actually not used by the app. The field is hidden to humans via CSS, and includes a warning label for screenreading software.

Create web app APIs that respond to one or more formats using an elegant DSL.

This is a simple lightweight way to expose work-in-progress functionality to developers, testers or other internal users.

AcornCache is a Ruby HTTP proxy caching library that is lightweight, configurable and can be easily integrated with any Rack-based web application. AcornCache allows you to improve page load times and lighten the load on your server by allowing you to implement an in-memory cache shared by every ...

Detect and show a maintenance page

Generate a static site from any rackup compatible application.

Rack-compatible CORS middleware supporting configurable allowed origins, methods, headers, credentials, and max-age. Handles preflight OPTIONS requests and sets appropriate Access-Control headers.

Abort requests that take too long, but don't murder Puma workers in the process.

If the user clicked through from an affiliated site, this middleware will track affiliate tag, referring url and time.

A healthcheck interface for Sinatra and Rails framework

Rack/Rails middleware to log API calls to Moesif API analytics and monitoring

RESTRack is a Rack-based MVC framework that makes it extremely easy to develop RESTful data services. It is inspired by Rails, and follows a few of its conventions. But it has no routes file, routing relationships are done through supplying custom code blocks to class methods such as "has_relat...

With "Bormaŝino" you can build SPAs written in Ruby powered by Ruby WebAssembly build and Sinatra (or other rack-based web application frameworks).

Runs a rack conform application inside jetty web server

Allow web service clients to specify the request time zone in an HTTP header.

Kiev is a logging tool aimed at distributed environments. It logs to JSON, while providing human-readable output in development mode. It integrates nicely with Rails, Sinatra and other Rack-based frameworks, Sidekiq, Que, HTTParty, Her and other Faraday-based HTTP clients.

Use Rack::Directory to rackup the current directory on port 9292 for availability in a browser

Ruby SDK for Datastar. Rack-compatible.

Compose declarative, component-based responses to HTTP requests