The OWASP ZAP core project
SoapUI is a free and open source cross-platform functional testing
Python testing tool for writing better programs
Flexible, lightweight multi-language test reporting tool
A modern load testing tool, using Go and JavaScript
HTTP load testing tool and library. It's over 9000!
Scalable open source load testing tool
Fortio load testing library, command line tool, advanced echo server
Open Source record and playback test automation for the web
Powerful, elegant and flexible test framework for Kotlin
A Node.js tool to automate end-to-end web testing
Testing for Developers. Toolkit that creates test-cases and data mocks
PerfView is a CPU and memory performance-analysis tool
benchmark tooling that loves you
Lightweight service virtualization/ API simulation / API mocking tool
Install and run Python applications in isolated environments
A TCP proxy to simulate network and system conditions for chaos
Automation for iOS, Android, and Windows Apps
Generate HTTP load and plot the results in real-time
LCOV
Test automation made simple
Quick and Easy server testing/validation
Molecule aids in the development and testing of Ansible roles
Build integration and end-to-end tests in minutes
qooxdoo - Universal JavaScript Framework