Automatically respond to JSON::API requests

Generate HTTP Client from JSON Schema.

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

JWT request signing and verification for Internal APIs

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.

Base classes to write plugins.

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.

A "control plane" for Microservices "service mesh".

Implements the W3C Linked Data Patch Format and operations for RDF.rb. Makes use of the SPARQL gem for performing updates.

A really simple pagination library, heavily based on the agnostic branch of will_paginate

Lennarb provides a lightweight yet robust solution for web routing in Ruby, focusing on performance and simplicity.

An ActiveSupport cache store that uses the C-based libmemcached client through Evan Weaver's Ruby/SWIG wrapper, memcached. libmemcached is fast, lightweight, and supports consistent hashing, non-blocking IO, and graceful server failover.

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Ruby client library for Litmus Instant API, provides the simplest way to capture instant email previews in real clients from Ruby.

Ruby library for the Livepeer API.

Log aggregation through unified logging middleware, while respecting the original log format.

LogSpy is a rack middleware sending request log to Amazon SQS

This gem provides building blocks to integrate Logux server interaction features into a Rack-based web applications.