NUnit 3 Framework
Now continued as OculiX — see oculix.org
Scalable open source load testing tool
Thou Shalt Write Tests in Go
State of the art mutation testing system for the JVM
SoapUI is a free and open source cross-platform functional testing
A modern, C++-native, test framework for unit-tests, TDD and BDD
Go library that makes it easier to write automated tests
Cucumber for Ruby
Testing for Developers. Toolkit that creates test-cases and data mocks
Find vulnerabilities, misconfigurations, secrets, SBOM in containers
Delightful JavaScript Testing
Development tools and libraries specialized for Angular
PerfView is a CPU and memory performance-analysis tool
Formatted output of timed sections in Julia
OS-agnostic, system-level binary package manager
Image loading system
Supports tests, providing lightweight, throwaway instances of database
Fast, easy and reliable testing for anything that runs in a browser
A Coverage-Guided, Native Python Fuzzer
The most advanced tool for HTTP API
Test automation made simple
A JavaScript Testing Framework
Most popular Mocking framework for unit tests written in Java
Headless Chromium-based web performance metrics collector