The OWASP ZAP core project
Testing for Developers. Toolkit that creates test-cases and data mocks
A fast, high-level web crawling and web scraping framework
Privilege Escalation Awesome Scripts SUITE
SoapUI is a free and open source cross-platform functional testing
SoloPi Automated Testing Tool
Browser test runner based on mocha and wdio
GitHub's online schema migrations for MySQL
Test automation made simple
Malicious traffic detection system
Now continued as OculiX — see oculix.org
A modern load testing tool, using Go and JavaScript
OS-agnostic, system-level binary package manager
Lightweight service virtualization/ API simulation / API mocking tool
Optimizer for mobile applications
Headless Chrome Node.js API
Desktop app for inspecting your React JS and React Native projects
Open source eCommerce platform on Symfony
Scalable open source load testing tool
Super-agent driven library for testing node.js HTTP servers
Complete Mandiant Offensive VM (Commando VM)
Drill is an HTTP load testing application written in Rust
HTTP load testing tool and library. It's over 9000!
Most popular Mocking framework for unit tests written in Java
Visual diffing in CI for user interfaces