The OWASP ZAP core project
Privilege Escalation Awesome Scripts SUITE
OS-agnostic, system-level binary package manager
SoapUI is a free and open source cross-platform functional testing
Headless Chrome Node.js API
A fast, high-level web crawling and web scraping framework
Now continued as OculiX — see oculix.org
Complete Mandiant Offensive VM (Commando VM)
A modern load testing tool, using Go and JavaScript
This is the stress-ng upstream project git repository.
Desktop app for inspecting your React JS and React Native projects
Speedtest Tracker is a self-hosted internet performance tracking app
HTTP load testing tool and library. It's over 9000!
Test automation made simple
Node.js Production Process Manager with a built-in Load Balancer
Open Source record and playback test automation for the web
Scalable open source load testing tool
Install and run Python applications in isolated environments
Record your test suite's HTTP interactions and replay them
Most popular Mocking framework for unit tests written in Java
Python testing tool for writing better programs
BDD / TDD assertion framework for node.js
Headless Chromium-based web performance metrics collector
Visual diffing in CI for user interfaces
Fastest feature-rich C++11/14/17/20 single-header testing framework