A template engine that generates hypermedia enbabled media types representations

Simple account switcher for Rails that automatically retrieves a few user accounts for each role and provides single-click login feature.

Provides idempotency keys for Rack applications.

A gem to help improve logging. Focused on request tracing and cross app tracing.

Rack middleware for rate-limiting incoming HTTP requests.

Interpol is a toolkit for working with API endpoint definition files, giving you a stub app, a schema validation middleware, and browsable documentation.

An IRC bot using EventMachine, and perhaps ØMQ one day.

J1 Theme is a gem-based, clean, responsive and fully featured template made for Jekyll

AMQP-HTTP compliant Server for Rack applications

Writes versioned, bundled and minified javascript files and dependencies

Shared configuration for cooperative middleware.

Namespace and Selectively Execute Javascript

Easy to use, framework-agnostic set of methods useful for integrating JSON:API in your project.

Automatically respond to JSON::API requests

Generate HTTP Client from JSON Schema.

Asynchronous (EventMachine) JSON-RPC 2.0 over HTTP client.

A lightweight Ruby web framework.

it said optional

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.

Kontrast is a testing tool that lets you build a frontend test suite to run against your test and production websites. It uses Selenium to take screenshots and ImageMagick to compare them. Kontrast then produces a detailed gallery of its test results.