Siege : Siege is an http load testing and benchmarking utility. It was designed to let web developers measure their code under duress, to see how it will stan...
Locust : A modern load testing framework
Define user behaviour with Python code, and swarm your system with millions of simultaneous users.
tracing-framework : Rich tools for instrumenting, analyzing, and visualizing web apps.
Cypress : JavaScript End to End Testing Framework. Fast, easy and reliable testing for anything that runs in a browser.
PhantomJS : PhantomJS is a headless WebKit with JavaScript API. It has fast and native support for various web standards: DOM handling, CSS selector, JSON, Canvas...
With Serverspec, you can write RSpec tests for checking your servers are configured correctly.
Serverspec tests your servers’ actual state by executing command locally, via SSH, via WinRM, via Docker API and so on.