Like totally awesome testing framework. Did I mention "totally" already?

Easily create callbacks for automated testing with tork

Treadmill is a performance testing tool

Simple rake tasks to open "Reverse" SSH tunnels for testing OAuth and other external APIs

UnitRecord enables unit testing without hitting the database.

Useful for testing the server's BOSH support.

AB testing gem used internally by Vinted

voteable gem for testing

Combines best features of Watir, RSpec and Ruby for browser-based functional testing.

Testing convenience gem for the wires framework.

A simple web server for testing static websites.

Scenario testing WS

Bootstrap iOS projects with builds and testing already configured

This gem contains useful helpers for building and testing iOS/watchOS/tvOS/macOS apps using rake.

testing gem

Generates: controller file with actions specified in arguments, schema file for param validation written using dry-validation gem, use case class for handling logic of the request, presenter class for serialization of objects, request rspec specs for proper testing

API Testing Done Right

Distributed load testing in Ruby using your own cloud

Gem for testing above the fold render on the first tcp round trip.

Retain your old testing workflow with Mongodb power