SoapUI is a free and open source cross-platform functional testing
Speedtest Tracker is a self-hosted internet performance tracking app
Record your test suite's HTTP interactions and replay them
The OWASP ZAP core project
CLI tool to build, test, debug, and deploy Serverless applications
Test Runner for JavaScript
Drill is an HTTP load testing application written in Rust
Most popular Mocking framework for unit tests written in Java
Privilege Escalation Awesome Scripts SUITE
Headless Chromium-based web performance metrics collector
PerfView is a CPU and memory performance-analysis tool
Fast, easy and reliable testing for anything that runs in a browser
Flexible, lightweight multi-language test reporting tool
A modern load testing tool, using Go and JavaScript
Learn Go with test-driven development
This Ansible collection provides battle tested hardening
Desktop app for inspecting your React JS and React Native projects
OS-agnostic, system-level binary package manager
Visual diffing in CI for user interfaces
Create test data for Elixir applications
Lightweight service virtualization/ API simulation / API mocking tool
A TCP proxy to simulate network and system conditions for chaos
Laravel Dusk provides simple end-to-end testing and browser automation
Testinfra test your infrastructures
Node.js Production Process Manager with a built-in Load Balancer